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All questions of Space Technology for BPSC (Bihar) Exam
Which satellite frequency band is primarily used for telemedicine applications?- a)Ka-band
- b)S-band
- c)X-band
- d)L-band
Correct answer is option 'B'. Can you explain this answer?
a)
Ka-band
b)
S-band
c)
X-band
d)
L-band
|
Lakshya Ias answered |
Telemedicine applications often use the S-band (2–4 GHz) for satellite communication, allowing remote areas to access specialized medical facilities.
Which type of satellites are used for the observation of distant stars and other objects in space?- a)Geostationary Satellites
- b)Earth Observation Satellites
- c)Navigation Satellites
- d)Astronomical Satellites
Correct answer is option 'D'. Can you explain this answer?
a)
Geostationary Satellites
b)
Earth Observation Satellites
c)
Navigation Satellites
d)
Astronomical Satellites
|
Akanksha Nambiar answered |
Explanation:
Astronomical Satellites
Astronomical satellites are specifically designed and used for the observation of distant stars and other objects in space. These satellites are equipped with powerful telescopes and sensors that can capture images and data from great distances in space.
Key points:
- Astronomical satellites orbit in higher altitudes than other types of satellites, allowing them to have a clear view of distant celestial bodies.
- They are used by astronomers and scientists to study the universe, gather data on stars, planets, galaxies, and other cosmic phenomena.
- These satellites play a crucial role in advancing our understanding of the universe and expanding our knowledge of space beyond what is observable from Earth.
- Examples of astronomical satellites include the Hubble Space Telescope, Chandra X-ray Observatory, and James Webb Space Telescope.
By using astronomical satellites, scientists can explore the mysteries of the universe and make groundbreaking discoveries in the field of astronomy.
Astronomical Satellites
Astronomical satellites are specifically designed and used for the observation of distant stars and other objects in space. These satellites are equipped with powerful telescopes and sensors that can capture images and data from great distances in space.
Key points:
- Astronomical satellites orbit in higher altitudes than other types of satellites, allowing them to have a clear view of distant celestial bodies.
- They are used by astronomers and scientists to study the universe, gather data on stars, planets, galaxies, and other cosmic phenomena.
- These satellites play a crucial role in advancing our understanding of the universe and expanding our knowledge of space beyond what is observable from Earth.
- Examples of astronomical satellites include the Hubble Space Telescope, Chandra X-ray Observatory, and James Webb Space Telescope.
By using astronomical satellites, scientists can explore the mysteries of the universe and make groundbreaking discoveries in the field of astronomy.
Which satellite is known as India's first geostationary experimental communication Satellite Project?- a)GSAT-6A
- b)GSAT-31
- c)ASTROSAT
- d)APPLE
Correct answer is option 'D'. Can you explain this answer?
a)
GSAT-6A
b)
GSAT-31
c)
ASTROSAT
d)
APPLE
|
K.L Institute answered |
APPLE was India's first geostationary experimental communication Satellite Project, as mentioned in the provided text.
What is the primary application of X-band satellite frequency?- a)Military radar
- b)Satellite mobile phones
- c)Weather forecasting
- d)Radio communications
Correct answer is option 'A'. Can you explain this answer?
a)
Military radar
b)
Satellite mobile phones
c)
Weather forecasting
d)
Radio communications
|
Master Training Institute answered |
X-band satellite frequency is primarily used by the military for radar applications, including continuous-wave, pulsed, single-polarization, dual-polarization, synthetic aperture radar, and phased arrays. It is also used in civil, military, and government institutions for various purposes such as weather monitoring, air traffic control, maritime vessel traffic control, defense tracking, and vehicle speed detection for law enforcement.
In which frequency band was India's GSAT-6 satellite launched for strategic military purposes and societal uses?- a)S-band
- b)L-band
- c)Ka-band
- d)X-band
Correct answer is option 'A'. Can you explain this answer?
a)
S-band
b)
L-band
c)
Ka-band
d)
X-band
|
Academic Studio answered |
India launched its GSAT-6 satellite in the S-band to enable multimedia applications for strategic military purposes and societal uses in case of emergencies.
What type of stars make up about 90 percent of the stars in the universe?- a)Red Giants
- b)T Tauri Stars
- c)Red Dwarfs
- d)Red Supergiants
Correct answer is option 'C'. Can you explain this answer?
a)
Red Giants
b)
T Tauri Stars
c)
Red Dwarfs
d)
Red Supergiants
|
Valor Academy answered |
Red Dwarfs make up about 90 percent of the stars in the Milky Way and the universe. They are relatively faint and small compared to other types of stars.
What is the final stage in the life cycle of a star like the Sun?- a)Red Dwarf
- b)White Dwarf
- c)Red Giant
- d)Black Dwarf
Correct answer is option 'B'. Can you explain this answer?
a)
Red Dwarf
b)
White Dwarf
c)
Red Giant
d)
Black Dwarf
|
|
Valor Academy answered |
The final stage in the life cycle of a star like the Sun is a White Dwarf. It is a small, hot, and dense remnant of a star that has exhausted its nuclear fuel.
Which satellite frequency band is known for being less susceptible to rain fade?- a)S-band
- b)L-band
- c)C-band
- d)Ku-band
Correct answer is option 'C'. Can you explain this answer?
a)
S-band
b)
L-band
c)
C-band
d)
Ku-band
|
|
Academic Studio answered |
The C-band is known for being less susceptible to rain fade compared to other frequency bands, such as the Ku-band. This makes it a suitable choice for satellite communications in areas prone to tropical rainfall.
In which year did INCOSPAR transform into ISRO?- a)1950
- b)1962
- c)1967
- d)1969
Correct answer is option 'D'. Can you explain this answer?
a)
1950
b)
1962
c)
1967
d)
1969
|
Lohit Matani answered |
INCOSPAR transformed into ISRO in the year 1969, as mentioned in the provided text.
Who was the founding chairman of the Department of Atomic Energy (DAE) in India?- a)Dr. Vikram Sarabhai
- b)Homi Bhabha
- c)C. V. Raman
- d)Meghnad Saha
Correct answer is option 'B'. Can you explain this answer?
a)
Dr. Vikram Sarabhai
b)
Homi Bhabha
c)
C. V. Raman
d)
Meghnad Saha
|
|
Lohit Matani answered |
Homi Bhabha was the founding chairman of the Department of Atomic Energy (DAE) in India, as mentioned in the provided text.
What is the primary component of a nebula?- a)Helium
- b)Hydrogen
- c)Carbon
- d)Oxygen
Correct answer is option 'B'. Can you explain this answer?
a)
Helium
b)
Hydrogen
c)
Carbon
d)
Oxygen
|
Anagha Shah answered |
Primary Component of a Nebula: Hydrogen
A nebula is a vast cloud of gas and dust in space, often considered as the birthplace of stars. It is composed of various elements, but the primary component of a nebula is hydrogen (H).
Explanation:
1. Composition of a Nebula:
A nebula is predominantly made up of hydrogen gas, which accounts for about 90% of its composition. Hydrogen atoms are the most abundant in the universe and serve as the building blocks for stars and galaxies. Other elements, such as helium, carbon, oxygen, nitrogen, and trace amounts of heavier elements, are also present in nebulae.
2. Formation of a Nebula:
Nebulae are formed through various processes, including the gravitational collapse of interstellar clouds, supernova explosions, and the remnants of dying stars. These events result in the dispersal of gas and dust into space, creating vast clouds known as nebulae.
3. Ionization and Excitation:
Nebulae can be classified into different types based on their appearance and the processes occurring within them. One common type is an emission nebula, also known as a HII region. These nebulae are primarily composed of ionized hydrogen gas (H+). Massive stars emit intense ultraviolet radiation, which ionizes the surrounding hydrogen atoms, causing them to lose an electron and become positively charged. This ionized hydrogen emits visible light, giving emission nebulae their characteristic red glow.
4. Role of Hydrogen in Star Formation:
Hydrogen plays a crucial role in the formation of stars. Within a nebula, regions of higher density and gravity can cause the gas and dust to collapse inward. As the hydrogen gas contracts, it heats up, eventually reaching a temperature and density where nuclear fusion can occur. This fusion process converts hydrogen into helium, releasing enormous amounts of energy. The outward pressure generated from the fusion reactions counteracts the gravitational collapse, resulting in a stable star.
Conclusion:
In summary, the primary component of a nebula is hydrogen. It constitutes the majority of a nebula's composition and is crucial for the formation of stars. Nebulae provide the necessary raw materials, including hydrogen gas, for the birth of new stars and the continuation of stellar evolution.
A nebula is a vast cloud of gas and dust in space, often considered as the birthplace of stars. It is composed of various elements, but the primary component of a nebula is hydrogen (H).
Explanation:
1. Composition of a Nebula:
A nebula is predominantly made up of hydrogen gas, which accounts for about 90% of its composition. Hydrogen atoms are the most abundant in the universe and serve as the building blocks for stars and galaxies. Other elements, such as helium, carbon, oxygen, nitrogen, and trace amounts of heavier elements, are also present in nebulae.
2. Formation of a Nebula:
Nebulae are formed through various processes, including the gravitational collapse of interstellar clouds, supernova explosions, and the remnants of dying stars. These events result in the dispersal of gas and dust into space, creating vast clouds known as nebulae.
3. Ionization and Excitation:
Nebulae can be classified into different types based on their appearance and the processes occurring within them. One common type is an emission nebula, also known as a HII region. These nebulae are primarily composed of ionized hydrogen gas (H+). Massive stars emit intense ultraviolet radiation, which ionizes the surrounding hydrogen atoms, causing them to lose an electron and become positively charged. This ionized hydrogen emits visible light, giving emission nebulae their characteristic red glow.
4. Role of Hydrogen in Star Formation:
Hydrogen plays a crucial role in the formation of stars. Within a nebula, regions of higher density and gravity can cause the gas and dust to collapse inward. As the hydrogen gas contracts, it heats up, eventually reaching a temperature and density where nuclear fusion can occur. This fusion process converts hydrogen into helium, releasing enormous amounts of energy. The outward pressure generated from the fusion reactions counteracts the gravitational collapse, resulting in a stable star.
Conclusion:
In summary, the primary component of a nebula is hydrogen. It constitutes the majority of a nebula's composition and is crucial for the formation of stars. Nebulae provide the necessary raw materials, including hydrogen gas, for the birth of new stars and the continuation of stellar evolution.
What was the primary objective of the Indian Department of Space (DOS)?- a)Developing space technology for military applications.
- b)Promoting the development and application of space science and technology for national development.
- c)Establishing international partnerships for space exploration.
- d)Conducting space research for pure scientific purposes.
Correct answer is option 'B'. Can you explain this answer?
a)
Developing space technology for military applications.
b)
Promoting the development and application of space science and technology for national development.
c)
Establishing international partnerships for space exploration.
d)
Conducting space research for pure scientific purposes.
|
|
Kavya Deshpande answered |
Primary Objective of Indian Department of Space (DOS)
The primary objective of the Indian Department of Space (DOS) is to promote the development and application of space science and technology for national development. This encompasses a wide range of activities aimed at harnessing space technology for the benefit of society and the country as a whole.
Promoting Development and Application of Space Science and Technology
- DOS focuses on developing and utilizing space technology for various applications such as communication, weather forecasting, remote sensing, satellite navigation, and disaster management.
- By leveraging space technology, DOS aims to address societal needs, enhance national security, and contribute to economic growth.
National Development
- DOS plays a crucial role in supporting various sectors of the economy by providing space-based solutions for agriculture, forestry, urban planning, and resource management.
- The department also contributes to infrastructure development, environmental monitoring, and healthcare services through the use of satellite technology.
Overall Impact
- Through its initiatives, DOS aims to improve the quality of life for citizens, boost industrial growth, and strengthen national security.
- By fostering innovation and collaboration in the field of space science and technology, DOS helps India achieve self-reliance in space capabilities and maintain a competitive edge in the global arena.
In conclusion, the primary objective of the Indian Department of Space is to harness space science and technology for national development, thereby driving progress and prosperity across various sectors of society.
What does the Big Bang Theory state about the origin of the universe?- a)The universe has always existed in its current form.
- b)The universe was created by a divine being.
- c)The universe began as a single point of high-density and high-temperature and has been expanding ever since.
- d)The universe is constantly shrinking and will eventually collapse.
Correct answer is option 'C'. Can you explain this answer?
a)
The universe has always existed in its current form.
b)
The universe was created by a divine being.
c)
The universe began as a single point of high-density and high-temperature and has been expanding ever since.
d)
The universe is constantly shrinking and will eventually collapse.
|
Meghana Nambiar answered |
The Big Bang Theory is a widely accepted scientific explanation for the origin and evolution of the universe. It proposes that the universe began as a single point of high-density and high-temperature and has been expanding ever since. This theory is supported by various lines of evidence, including the observed expansion of galaxies, the abundance of light elements in the universe, and the cosmic microwave background radiation.
The Big Bang Theory can be explained in detail as follows:
1. Initial Singularity:
According to the Big Bang Theory, the universe originated from an extremely hot and dense state known as the initial singularity. At this point, all matter, energy, space, and time were concentrated in a single infinitesimal point.
2. Expansion and Cooling:
Shortly after the initial singularity, the universe began to rapidly expand and cool down. This expansion is often referred to as the "Big Bang." As the universe expanded, the temperature and density decreased, allowing the formation of subatomic particles like protons, neutrons, and electrons.
3. Formation of Matter:
As the universe continued to expand and cool, the subatomic particles started to combine and form atoms, primarily hydrogen and helium. This process is known as nucleosynthesis. These atoms then clumped together under the influence of gravity, eventually forming stars, galaxies, and other celestial structures.
4. Cosmic Microwave Background Radiation:
Around 380,000 years after the Big Bang, the universe had cooled down enough for atoms to capture electrons and become neutral. This event, known as recombination, allowed photons to travel freely through space, resulting in the release of the cosmic microwave background radiation (CMB). The CMB is a faint radiation that permeates the entire universe and is considered as one of the strongest pieces of evidence supporting the Big Bang Theory.
5. Expansion of the Universe:
Observations of galaxies and their redshifts have provided strong evidence for the ongoing expansion of the universe. The farther away a galaxy is, the faster it appears to be moving away from us. This observation supports the idea that the universe is expanding from a single point, as predicted by the Big Bang Theory.
In conclusion, the Big Bang Theory states that the universe began as a single point of high-density and high-temperature and has been expanding ever since. The theory is supported by various scientific observations and provides a comprehensive explanation for the origin and evolution of the universe.
The Big Bang Theory can be explained in detail as follows:
1. Initial Singularity:
According to the Big Bang Theory, the universe originated from an extremely hot and dense state known as the initial singularity. At this point, all matter, energy, space, and time were concentrated in a single infinitesimal point.
2. Expansion and Cooling:
Shortly after the initial singularity, the universe began to rapidly expand and cool down. This expansion is often referred to as the "Big Bang." As the universe expanded, the temperature and density decreased, allowing the formation of subatomic particles like protons, neutrons, and electrons.
3. Formation of Matter:
As the universe continued to expand and cool, the subatomic particles started to combine and form atoms, primarily hydrogen and helium. This process is known as nucleosynthesis. These atoms then clumped together under the influence of gravity, eventually forming stars, galaxies, and other celestial structures.
4. Cosmic Microwave Background Radiation:
Around 380,000 years after the Big Bang, the universe had cooled down enough for atoms to capture electrons and become neutral. This event, known as recombination, allowed photons to travel freely through space, resulting in the release of the cosmic microwave background radiation (CMB). The CMB is a faint radiation that permeates the entire universe and is considered as one of the strongest pieces of evidence supporting the Big Bang Theory.
5. Expansion of the Universe:
Observations of galaxies and their redshifts have provided strong evidence for the ongoing expansion of the universe. The farther away a galaxy is, the faster it appears to be moving away from us. This observation supports the idea that the universe is expanding from a single point, as predicted by the Big Bang Theory.
In conclusion, the Big Bang Theory states that the universe began as a single point of high-density and high-temperature and has been expanding ever since. The theory is supported by various scientific observations and provides a comprehensive explanation for the origin and evolution of the universe.
What was the major significance of the discovery of cosmic microwave background radiation?- a)It provided evidence of the existence of extraterrestrial life.
- b)It confirmed the existence of black holes in the universe.
- c)It supported the Big Bang Theory as a crucial piece of evidence.
- d)It explained the origin of cosmic rays.
Correct answer is option 'C'. Can you explain this answer?
a)
It provided evidence of the existence of extraterrestrial life.
b)
It confirmed the existence of black holes in the universe.
c)
It supported the Big Bang Theory as a crucial piece of evidence.
d)
It explained the origin of cosmic rays.
|
|
Lakshya Ias answered |
The discovery of cosmic microwave background radiation, as mentioned in the text, was crucial evidence in favor of the Big Bang Theory. It provided strong support for the theory's explanation of the universe's origin.
Which type of satellites are used for military purposes and have their performance and operation kept secret?- a)Geostationary Satellites
- b)Earth Observation Satellites
- c)Reconnaissance Satellites
- d)Weather Satellites
Correct answer is option 'C'. Can you explain this answer?
a)
Geostationary Satellites
b)
Earth Observation Satellites
c)
Reconnaissance Satellites
d)
Weather Satellites
|
Capstone Ias Learning answered |
Reconnaissance satellites are used for military purposes and have their performance and operation kept secret, as mentioned in the provided text.
What is the primary driving force behind the expansion of the universe?- a)Dark Matter
- b)Dark Energy
- c)Neutrinos
- d)Antimatter
Correct answer is option 'B'. Can you explain this answer?
a)
Dark Matter
b)
Dark Energy
c)
Neutrinos
d)
Antimatter
|
|
Ananya Ahuja answered |
The primary driving force behind the expansion of the universe is Dark Energy.
Explanation:
1. Introduction:
The expansion of the universe refers to the phenomenon where the distance between galaxies and other cosmic structures is constantly increasing over time. This observation was first made by Edwin Hubble in the 1920s and has since been confirmed by various astronomical observations.
2. Dark Energy:
Dark Energy is a hypothetical form of energy that is believed to permeate all of space and is responsible for the accelerated expansion of the universe. It is called "dark" because it does not interact with light or other electromagnetic radiation, making it difficult to detect directly.
3. Discovery of Dark Energy:
The existence of Dark Energy was first proposed in the late 1990s when astronomers observed that distant supernovae were fainter than expected, indicating that the expansion of the universe is accelerating. This discovery was awarded the Nobel Prize in Physics in 2011.
4. Role of Dark Energy:
Dark Energy acts as a repulsive force that counteracts the gravitational attraction between galaxies and other cosmic structures. While gravity tends to pull objects together, Dark Energy pushes them apart, causing the expansion of the universe to accelerate over time.
5. Understanding Dark Energy:
Despite its importance, Dark Energy remains poorly understood. It is often associated with the cosmological constant, a term introduced by Albert Einstein in his general theory of relativity. The cosmological constant represents a constant energy density in space, which can drive the accelerated expansion.
6. Proportion of Dark Energy:
Dark Energy is believed to account for about 68% of the total energy content of the universe, with Dark Matter accounting for about 27% and ordinary matter making up the remaining 5%. This means that Dark Energy is the dominant factor influencing the expansion of the universe.
7. Future of the Universe:
The presence of Dark Energy and its acceleration of the universe's expansion have significant implications for the future of the cosmos. It is believed that as the universe continues to expand, galaxies will become more and more separated, eventually leading to a "Big Freeze" scenario where the universe becomes cold and dark.
Conclusion:
In conclusion, Dark Energy is the primary driving force behind the expansion of the universe. Its repulsive nature counteracts gravitational attraction and causes the acceleration observed in the expansion. While Dark Energy remains a mysterious phenomenon, further research and observations are ongoing to better understand its nature and implications for the future of the universe.
Explanation:
1. Introduction:
The expansion of the universe refers to the phenomenon where the distance between galaxies and other cosmic structures is constantly increasing over time. This observation was first made by Edwin Hubble in the 1920s and has since been confirmed by various astronomical observations.
2. Dark Energy:
Dark Energy is a hypothetical form of energy that is believed to permeate all of space and is responsible for the accelerated expansion of the universe. It is called "dark" because it does not interact with light or other electromagnetic radiation, making it difficult to detect directly.
3. Discovery of Dark Energy:
The existence of Dark Energy was first proposed in the late 1990s when astronomers observed that distant supernovae were fainter than expected, indicating that the expansion of the universe is accelerating. This discovery was awarded the Nobel Prize in Physics in 2011.
4. Role of Dark Energy:
Dark Energy acts as a repulsive force that counteracts the gravitational attraction between galaxies and other cosmic structures. While gravity tends to pull objects together, Dark Energy pushes them apart, causing the expansion of the universe to accelerate over time.
5. Understanding Dark Energy:
Despite its importance, Dark Energy remains poorly understood. It is often associated with the cosmological constant, a term introduced by Albert Einstein in his general theory of relativity. The cosmological constant represents a constant energy density in space, which can drive the accelerated expansion.
6. Proportion of Dark Energy:
Dark Energy is believed to account for about 68% of the total energy content of the universe, with Dark Matter accounting for about 27% and ordinary matter making up the remaining 5%. This means that Dark Energy is the dominant factor influencing the expansion of the universe.
7. Future of the Universe:
The presence of Dark Energy and its acceleration of the universe's expansion have significant implications for the future of the cosmos. It is believed that as the universe continues to expand, galaxies will become more and more separated, eventually leading to a "Big Freeze" scenario where the universe becomes cold and dark.
Conclusion:
In conclusion, Dark Energy is the primary driving force behind the expansion of the universe. Its repulsive nature counteracts gravitational attraction and causes the acceleration observed in the expansion. While Dark Energy remains a mysterious phenomenon, further research and observations are ongoing to better understand its nature and implications for the future of the universe.
What is the primary purpose of sounding rockets?- a)To transport cargo to space stations.
- b)To probe the upper atmospheric regions.
- c)To launch communication satellites.
- d)To transport astronauts to the moon.
Correct answer is option 'B'. Can you explain this answer?
a)
To transport cargo to space stations.
b)
To probe the upper atmospheric regions.
c)
To launch communication satellites.
d)
To transport astronauts to the moon.
|
Aravind Mukherjee answered |
Primary Purpose of Sounding Rockets:
Sounding rockets are suborbital rockets designed for scientific research and data collection in the upper atmospheric regions. They are typically used to probe and study various phenomena in the Earth's atmosphere and beyond.
Purpose of Sounding Rockets:
- Upper Atmospheric Research: The primary purpose of sounding rockets is to probe the upper atmospheric regions, including the ionosphere and thermosphere. These rockets carry scientific instruments and payloads to collect data on atmospheric conditions, radiation levels, and other phenomena.
- Data Collection: Sounding rockets are used to gather data on cosmic rays, solar radiation, magnetic fields, and other atmospheric properties. This data helps scientists better understand the Earth's atmosphere and space environment.
- Testing Instrumentation: Sounding rockets are also used to test new instruments and technologies in a space-like environment. Scientists can validate the performance of their instruments before using them on more expensive satellite missions.
- Quick and Cost-Effective Research: Sounding rockets provide a relatively quick and cost-effective way to conduct scientific research in space. They can be launched on short notice and do not require the long lead times associated with satellite missions.
- Educational Purposes: Sounding rockets are also used for educational purposes, allowing students and researchers to gain hands-on experience in space research and experimentation.
In conclusion, the primary purpose of sounding rockets is to probe the upper atmospheric regions and conduct scientific research to enhance our understanding of the Earth's atmosphere and space environment.
Sounding rockets are suborbital rockets designed for scientific research and data collection in the upper atmospheric regions. They are typically used to probe and study various phenomena in the Earth's atmosphere and beyond.
Purpose of Sounding Rockets:
- Upper Atmospheric Research: The primary purpose of sounding rockets is to probe the upper atmospheric regions, including the ionosphere and thermosphere. These rockets carry scientific instruments and payloads to collect data on atmospheric conditions, radiation levels, and other phenomena.
- Data Collection: Sounding rockets are used to gather data on cosmic rays, solar radiation, magnetic fields, and other atmospheric properties. This data helps scientists better understand the Earth's atmosphere and space environment.
- Testing Instrumentation: Sounding rockets are also used to test new instruments and technologies in a space-like environment. Scientists can validate the performance of their instruments before using them on more expensive satellite missions.
- Quick and Cost-Effective Research: Sounding rockets provide a relatively quick and cost-effective way to conduct scientific research in space. They can be launched on short notice and do not require the long lead times associated with satellite missions.
- Educational Purposes: Sounding rockets are also used for educational purposes, allowing students and researchers to gain hands-on experience in space research and experimentation.
In conclusion, the primary purpose of sounding rockets is to probe the upper atmospheric regions and conduct scientific research to enhance our understanding of the Earth's atmosphere and space environment.
Which elementary particle has an antiparticle with the same mass but opposite electrical charge?- a)Proton
- b)Neutron
- c)Electron
- d)Neutrino
Correct answer is option 'C'. Can you explain this answer?
a)
Proton
b)
Neutron
c)
Electron
d)
Neutrino
|
Keerthana Sen answered |
Electron is the elementary particle that has an antiparticle with the same mass but opposite electrical charge. An antiparticle is a particle that has the same mass as its corresponding particle but carries the opposite charge.
Below is a detailed explanation for each option:
a) Proton: The proton is a positively charged elementary particle found in the nucleus of an atom. Its antiparticle is called the antiproton, which has the same mass as a proton but carries a negative charge. Therefore, the antiparticle of a proton does not have the same electrical charge as the proton.
b) Neutron: The neutron is a neutral elementary particle found in the nucleus of an atom. Since it has no electrical charge, its antiparticle would also have no charge. Therefore, the antiparticle of a neutron does not have the same electrical charge as the neutron.
c) Electron: The electron is a negatively charged elementary particle found orbiting the nucleus of an atom. Its antiparticle is called the positron, which has the same mass as an electron but carries a positive charge. The positron is the antiparticle of the electron and has the same mass but opposite electrical charge. Therefore, the correct answer is option 'C'.
d) Neutrino: The neutrino is a neutral elementary particle with very little mass. It is not electrically charged, so it does not have an electrical charge to be opposite to. Therefore, the antiparticle of a neutrino does not have the same electrical charge as the neutrino.
In summary, the electron is the elementary particle that has an antiparticle with the same mass but opposite electrical charge. The antiparticle of an electron is called a positron, which has the same mass as an electron but carries a positive charge.
Below is a detailed explanation for each option:
a) Proton: The proton is a positively charged elementary particle found in the nucleus of an atom. Its antiparticle is called the antiproton, which has the same mass as a proton but carries a negative charge. Therefore, the antiparticle of a proton does not have the same electrical charge as the proton.
b) Neutron: The neutron is a neutral elementary particle found in the nucleus of an atom. Since it has no electrical charge, its antiparticle would also have no charge. Therefore, the antiparticle of a neutron does not have the same electrical charge as the neutron.
c) Electron: The electron is a negatively charged elementary particle found orbiting the nucleus of an atom. Its antiparticle is called the positron, which has the same mass as an electron but carries a positive charge. The positron is the antiparticle of the electron and has the same mass but opposite electrical charge. Therefore, the correct answer is option 'C'.
d) Neutrino: The neutrino is a neutral elementary particle with very little mass. It is not electrically charged, so it does not have an electrical charge to be opposite to. Therefore, the antiparticle of a neutrino does not have the same electrical charge as the neutrino.
In summary, the electron is the elementary particle that has an antiparticle with the same mass but opposite electrical charge. The antiparticle of an electron is called a positron, which has the same mass as an electron but carries a positive charge.
Which satellite frequency band is used by Global Positioning System (GPS) carriers?- a)S-band
- b)L-band
- c)X-band
- d)C-band
Correct answer is option 'B'. Can you explain this answer?
a)
S-band
b)
L-band
c)
X-band
d)
C-band
|
Maya Choudhary answered |
The answer is option 'B', L-band.
The Global Positioning System (GPS) is a satellite-based navigation system that provides location and time information to users all around the world. It relies on a network of satellites orbiting the Earth to transmit signals that can be received by GPS receivers.
GPS carriers use the L-band frequency band for transmitting their signals. Here is an explanation of why L-band is chosen for GPS carriers:
Frequency Band Characteristics:
- Different frequency bands have different characteristics in terms of signal propagation, interference, and antenna size requirements.
- The L-band frequency range falls between 1 to 2 GHz, which is in the microwave region of the electromagnetic spectrum.
- Microwave frequencies are commonly used for satellite communication due to their ability to penetrate the Earth's atmosphere and experience less interference from weather conditions.
Advantages of L-band for GPS:
1. Signal Penetration: L-band signals have a good ability to penetrate through various obstacles such as buildings and tree canopies. This makes them suitable for providing accurate positioning information even in urban areas or dense forests.
2. Interference: L-band signals experience less interference from atmospheric conditions, such as rain or fog, compared to higher frequency bands. This ensures reliable signal reception and reduces the chances of signal degradation.
3. Antenna Size: The wavelength of L-band signals is relatively large compared to higher frequency bands. This allows for the design of smaller and more compact GPS antennas, making them easier to integrate into handheld devices or vehicles.
4. Availability of Frequencies: The L-band frequency range is allocated specifically for satellite navigation and positioning systems like GPS. This ensures that the frequencies are reserved and not heavily congested with other communication systems.
5. Global Coverage: The GPS system is designed to provide global coverage, and L-band signals are capable of traveling long distances without significant degradation. This allows GPS receivers to obtain accurate positioning information anywhere on Earth.
In conclusion, the L-band frequency band is used by GPS carriers due to its advantages in signal penetration, interference resistance, compact antenna design, availability of frequencies, and global coverage capabilities.
The Global Positioning System (GPS) is a satellite-based navigation system that provides location and time information to users all around the world. It relies on a network of satellites orbiting the Earth to transmit signals that can be received by GPS receivers.
GPS carriers use the L-band frequency band for transmitting their signals. Here is an explanation of why L-band is chosen for GPS carriers:
Frequency Band Characteristics:
- Different frequency bands have different characteristics in terms of signal propagation, interference, and antenna size requirements.
- The L-band frequency range falls between 1 to 2 GHz, which is in the microwave region of the electromagnetic spectrum.
- Microwave frequencies are commonly used for satellite communication due to their ability to penetrate the Earth's atmosphere and experience less interference from weather conditions.
Advantages of L-band for GPS:
1. Signal Penetration: L-band signals have a good ability to penetrate through various obstacles such as buildings and tree canopies. This makes them suitable for providing accurate positioning information even in urban areas or dense forests.
2. Interference: L-band signals experience less interference from atmospheric conditions, such as rain or fog, compared to higher frequency bands. This ensures reliable signal reception and reduces the chances of signal degradation.
3. Antenna Size: The wavelength of L-band signals is relatively large compared to higher frequency bands. This allows for the design of smaller and more compact GPS antennas, making them easier to integrate into handheld devices or vehicles.
4. Availability of Frequencies: The L-band frequency range is allocated specifically for satellite navigation and positioning systems like GPS. This ensures that the frequencies are reserved and not heavily congested with other communication systems.
5. Global Coverage: The GPS system is designed to provide global coverage, and L-band signals are capable of traveling long distances without significant degradation. This allows GPS receivers to obtain accurate positioning information anywhere on Earth.
In conclusion, the L-band frequency band is used by GPS carriers due to its advantages in signal penetration, interference resistance, compact antenna design, availability of frequencies, and global coverage capabilities.
Which organization markets space products and services on behalf of the Indian government?- a)Indian Space Research Organisation (ISRO)
- b)Physical Research Laboratory (PRL)
- c)Antrix Corporation
- d)National Atmospheric Research Laboratory (NARL)
Correct answer is option 'C'. Can you explain this answer?
a)
Indian Space Research Organisation (ISRO)
b)
Physical Research Laboratory (PRL)
c)
Antrix Corporation
d)
National Atmospheric Research Laboratory (NARL)
|
|
Academic Studio answered |
The Antrix Corporation, as mentioned in the text, is the government-owned company responsible for marketing space products and services. It acts as the commercial arm of ISRO.
Which stage in the life cycle of a star is characterized by the fusion of hydrogen to form helium in its core?- a)Protostar
- b)Red Giant
- c)Main Sequence Star
- d)White Dwarf
Correct answer is option 'C'. Can you explain this answer?
a)
Protostar
b)
Red Giant
c)
Main Sequence Star
d)
White Dwarf
|
|
Lakshya Ias answered |
Main Sequence Star is the stage in the life cycle of a star where hydrogen fusion occurs in the core. This fusion of hydrogen to form helium is what provides the star with its energy, allowing it to shine steadily.
Which type of orbit allows a satellite to pass over a section of the Earth at the same time of day?- a)Polar Orbit
- b)Sun Synchronous Orbit
- c)Geosynchronous Orbit
- d)Geostationary Orbit
Correct answer is option 'B'. Can you explain this answer?
a)
Polar Orbit
b)
Sun Synchronous Orbit
c)
Geosynchronous Orbit
d)
Geostationary Orbit
|
Goel UPSC Coaching Center answered |
Sun Synchronous Orbit allows a satellite to pass over a section of the Earth at the same time of day, as mentioned in the provided text.
What is the primary service area of the IRNSS navigation system developed by India?- a)Worldwide
- b)Up to 500 km from its boundary
- c)Up to 1000 km from its boundary
- d)Up to 1500 km from its boundary
Correct answer is option 'D'. Can you explain this answer?
a)
Worldwide
b)
Up to 500 km from its boundary
c)
Up to 1000 km from its boundary
d)
Up to 1500 km from its boundary
|
Ias Masters answered |
The primary service area of the IRNSS navigation system developed by India extends up to 1500 km from its boundary, as mentioned in the provided text.
Which Indian organization is responsible for the country's space endeavors?- a)Indian Air Force
- b)Indian Space Research Organization (ISRO)
- c)Department of Atomic Energy (DAE)
- d)Indian National Committee for Space Research (INCOSPAR)
Correct answer is option 'B'. Can you explain this answer?
a)
Indian Air Force
b)
Indian Space Research Organization (ISRO)
c)
Department of Atomic Energy (DAE)
d)
Indian National Committee for Space Research (INCOSPAR)
|
Pranab Majumdar answered |
Indian Space Research Organization (ISRO)
ISRO, the Indian Space Research Organization, is the organization responsible for the country's space endeavors. It was founded in 1969, with the vision to harness space technology for national development while pursuing space science research and planetary exploration.
Missions and Achievements
- ISRO has successfully launched numerous satellites for communication, remote sensing, and navigation purposes.
- The organization has also conducted missions to the moon (Chandrayaan) and Mars (Mangalyaan), showcasing India's capabilities in space exploration.
- ISRO's cost-effective approach to space missions has garnered international recognition and partnerships.
Key Initiatives
- The development of indigenous launch vehicles like the Polar Satellite Launch Vehicle (PSLV) and the Geosynchronous Satellite Launch Vehicle (GSLV) has been a significant achievement for ISRO.
- The organization has also established the Indian National Satellite System (INSAT) for communication, broadcasting, and meteorological applications.
International Collaboration
- ISRO collaborates with various international space agencies and organizations for joint missions, technology sharing, and research partnerships.
- The organization's successful track record and expertise in space technology have made it a sought-after partner in the global space community.
In conclusion, ISRO plays a crucial role in India's space endeavors, driving innovation, technological advancements, and national development through its missions and initiatives.
ISRO, the Indian Space Research Organization, is the organization responsible for the country's space endeavors. It was founded in 1969, with the vision to harness space technology for national development while pursuing space science research and planetary exploration.
Missions and Achievements
- ISRO has successfully launched numerous satellites for communication, remote sensing, and navigation purposes.
- The organization has also conducted missions to the moon (Chandrayaan) and Mars (Mangalyaan), showcasing India's capabilities in space exploration.
- ISRO's cost-effective approach to space missions has garnered international recognition and partnerships.
Key Initiatives
- The development of indigenous launch vehicles like the Polar Satellite Launch Vehicle (PSLV) and the Geosynchronous Satellite Launch Vehicle (GSLV) has been a significant achievement for ISRO.
- The organization has also established the Indian National Satellite System (INSAT) for communication, broadcasting, and meteorological applications.
International Collaboration
- ISRO collaborates with various international space agencies and organizations for joint missions, technology sharing, and research partnerships.
- The organization's successful track record and expertise in space technology have made it a sought-after partner in the global space community.
In conclusion, ISRO plays a crucial role in India's space endeavors, driving innovation, technological advancements, and national development through its missions and initiatives.
What is the purpose of the GAGAN system in India?- a)Space-based navigation
- b)Earth observation
- c)Weather monitoring
- d)Satellite-based communication
Correct answer is option 'A'. Can you explain this answer?
a)
Space-based navigation
b)
Earth observation
c)
Weather monitoring
d)
Satellite-based communication
|
|
Capstone Ias Learning answered |
The GAGAN system in India is used for space-based navigation, as mentioned in the provided text.
What is the purpose of the Indian Space Research Organisation's (ISRO) Chandrayaan mission?- a)Study of gravity waves in the atmosphere
- b)Commercialization of space technology
- c)Unmanned mission to the moon
- d)Telecommunications in rural areas
Correct answer is option 'C'. Can you explain this answer?
a)
Study of gravity waves in the atmosphere
b)
Commercialization of space technology
c)
Unmanned mission to the moon
d)
Telecommunications in rural areas
|
|
Lakshya Ias answered |
ISRO's Chandrayaan mission is an unmanned scientific mission to the moon. It aims to study the moon's surface and gather scientific data.
What triggers a nova event on the surface of a white dwarf in a binary system?- a)Fusion of hydrogen to form helium
- b)Accumulation of material from a companion star
- c)Sudden increase in temperature
- d)Loss of mass from the white dwarf
Correct answer is option 'B'. Can you explain this answer?
a)
Fusion of hydrogen to form helium
b)
Accumulation of material from a companion star
c)
Sudden increase in temperature
d)
Loss of mass from the white dwarf
|
EduRev UPSC answered |
A nova event on the surface of a white dwarf is triggered when it accumulates enough material from a companion star. This material buildup leads to a sudden increase in pressure and temperature, causing a bright outburst.
What is the primary function of neutrinos in the study of the universe?- a)Generating light in stars
- b)Probing the early Universe
- c)Creating elements in supernovae
- d)Forming brown dwarfs
Correct answer is option 'B'. Can you explain this answer?
a)
Generating light in stars
b)
Probing the early Universe
c)
Creating elements in supernovae
d)
Forming brown dwarfs
|
|
K.L Institute answered |
Neutrinos are used to probe the early Universe. They interact very weakly with matter, allowing them to travel long distances undisturbed. This makes them valuable for studying the universe's early stages.
Which type of rocket propulsion system stores fuel and oxidizer separately and combines them in a combustion chamber?- a)Liquid Propellants
- b)Solid Propellants
- c)Hybrid Propellants
- d)Hypergolic Propellants
Correct answer is option 'A'. Can you explain this answer?
a)
Liquid Propellants
b)
Solid Propellants
c)
Hybrid Propellants
d)
Hypergolic Propellants
|
|
Lohit Matani answered |
Liquid propellants store fuel and oxidizer separately in tanks and combine them in a combustion chamber for propulsion. This allows for precise control of the engine, including throttling and restarting.
What is the primary goal of the HysIS satellite?- a)Study the Earth's atmosphere
- b)Observe distant galaxies
- c)Monitor weather patterns
- d)Study the Earth's surface in various electromagnetic regions
Correct answer is option 'D'. Can you explain this answer?
a)
Study the Earth's atmosphere
b)
Observe distant galaxies
c)
Monitor weather patterns
d)
Study the Earth's surface in various electromagnetic regions
|
|
Master Training Institute answered |
The primary goal of the HysIS satellite is to study the Earth's surface in various electromagnetic regions, as mentioned in the provided text.
Which Indian satellite was the first to be launched into space?- a)Chandrayaan-1
- b)Aryabhata
- c)Bhaskara-I
- d)Rohini Technology Payload
Correct answer is option 'B'. Can you explain this answer?
a)
Chandrayaan-1
b)
Aryabhata
c)
Bhaskara-I
d)
Rohini Technology Payload
|
|
Academic Studio answered |
Aryabhata was the first Indian satellite to be launched into space, as mentioned in the provided text. It was launched on April 19, 1975.
What is the frequency range of the Ka-band for satellite communication?- a)2–4 GHz
- b)12–18 GHz
- c)26–40 GHz
- d)8–12 GHz
Correct answer is option 'C'. Can you explain this answer?
a)
2–4 GHz
b)
12–18 GHz
c)
26–40 GHz
d)
8–12 GHz
|
|
Academic Studio answered |
The Ka-band for satellite communication operates in the frequency range of 26–40 GHz. It is used for close-up, high-resolution applications and is commonly employed for communications satellites.
Which launch vehicle is often referred to as the "workhorse of ISRO" and has launched missions to the Moon and Mars?- a)Satellite Launch Vehicle (SLV)
- b)Augmented Satellite Launch Vehicle (ASLV)
- c)Polar Satellite Launch Vehicle (PSLV)
- d)Geosynchronous Satellite Launch Vehicle (GSLV)
Correct answer is option 'C'. Can you explain this answer?
a)
Satellite Launch Vehicle (SLV)
b)
Augmented Satellite Launch Vehicle (ASLV)
c)
Polar Satellite Launch Vehicle (PSLV)
d)
Geosynchronous Satellite Launch Vehicle (GSLV)
|
Spectrum Coaching Institute answered |
The Polar Satellite Launch Vehicle (PSLV) is often referred to as the "workhorse of ISRO." It has successfully launched missions to the Moon (Chandrayaan-1) and Mars (Mars Orbiter Mission) and numerous other satellites.
What is the purpose of the Thumba Equatorial Rocket Launching Station (TERLS)?- a)To launch communication satellites.
- b)To study cosmic rays.
- c)To launch sounding rockets and study the upper atmosphere.
- d)To conduct space tourism activities.
Correct answer is option 'C'. Can you explain this answer?
a)
To launch communication satellites.
b)
To study cosmic rays.
c)
To launch sounding rockets and study the upper atmosphere.
d)
To conduct space tourism activities.
|
|
Academic Studio answered |
The purpose of the Thumba Equatorial Rocket Launching Station (TERLS), as mentioned in the text, is to launch sounding rockets and study the upper atmosphere. It is primarily focused on atmospheric research.
What is the primary purpose of a launch vehicle in space exploration?- a)To transport astronauts to and from space.
- b)To transport cargo to the International Space Station.
- c)To transport spacecraft and satellites into space.
- d)To study the upper atmospheric regions.
Correct answer is option 'C'. Can you explain this answer?
a)
To transport astronauts to and from space.
b)
To transport cargo to the International Space Station.
c)
To transport spacecraft and satellites into space.
d)
To study the upper atmospheric regions.
|
|
Lohit Matani answered |
The primary purpose of a launch vehicle in space exploration is to transport spacecraft and satellites into space. This allows for various space missions, including satellite deployment, planetary exploration, and scientific research.
What is the main advantage of hypergolic propellants in spacecraft maneuvering systems?- a)They are non-toxic.
- b)They can be stored at low temperatures.
- c)They do not require an ignition source.
- d)They have high thrust efficiency.
Correct answer is option 'C'. Can you explain this answer?
a)
They are non-toxic.
b)
They can be stored at low temperatures.
c)
They do not require an ignition source.
d)
They have high thrust efficiency.
|
T.S Academy answered |
The main advantage of hypergolic propellants is that they ignite spontaneously on contact with each other and do not require an ignition source. This feature makes them ideal for spacecraft maneuvering systems.
What is the significance of developing reusable launch vehicles with air-breathing propulsion systems?- a)They reduce launch costs and increase efficiency.
- b)They allow for longer space missions.
- c)They are more environmentally friendly.
- d)They are primarily used for satellite repair missions.
Correct answer is option 'A'. Can you explain this answer?
a)
They reduce launch costs and increase efficiency.
b)
They allow for longer space missions.
c)
They are more environmentally friendly.
d)
They are primarily used for satellite repair missions.
|
|
Capstone Ias Learning answered |
Developing reusable launch vehicles with air-breathing propulsion systems can significantly reduce launch costs and increase efficiency in accessing space. This technology has the potential to make space exploration more cost-effective and accessible.
What is the primary application of the X-band radar frequency sub-bands in civil, military, and government institutions?- a)Air traffic control
- b)Satellite mobile phones
- c)Broadcasting
- d)Maritime vessel traffic control
Correct answer is option 'A'. Can you explain this answer?
a)
Air traffic control
b)
Satellite mobile phones
c)
Broadcasting
d)
Maritime vessel traffic control
|
|
Lakshya Ias answered |
X-band radar frequency sub-bands are primarily used in civil, military, and government institutions for applications such as air traffic control, weather monitoring, maritime vessel traffic control, defense tracking, and more.
What is the main advantage of GSLV Mk III (Geosynchronous Satellite Launch Vehicle Mark III) over its predecessors?- a)It is more cost-effective.
- b)It can launch heavier payloads to Geosynchronous Transfer Orbit (GTO).
- c)It uses liquid propellants exclusively.
- d)It has a shorter overall height.
Correct answer is option 'B'. Can you explain this answer?
a)
It is more cost-effective.
b)
It can launch heavier payloads to Geosynchronous Transfer Orbit (GTO).
c)
It uses liquid propellants exclusively.
d)
It has a shorter overall height.
|
|
Valor Academy answered |
GSLV Mk III has the advantage of being able to launch heavier payloads to Geosynchronous Transfer Orbit (GTO). It can carry payloads of up to 5,000 kg to GTO, making it suitable for launching larger communication satellites.
What was the significance of the Satellite Instructional Television Experiment (SITE)?- a)It aimed to explore space tourism.
- b)It was a large-scale sociological experiment using satellite broadcasting for education in Indian villages.
- c)It was a space science mission to study cosmic rays.
- d)It was the first Indian satellite launched into space.
Correct answer is option 'B'. Can you explain this answer?
a)
It aimed to explore space tourism.
b)
It was a large-scale sociological experiment using satellite broadcasting for education in Indian villages.
c)
It was a space science mission to study cosmic rays.
d)
It was the first Indian satellite launched into space.
|
Upsc Toppers answered |
The Satellite Instructional Television Experiment (SITE), as mentioned in the text, was a large-scale sociological experiment using satellite broadcasting to educate people in Indian villages. It aimed to harness the power of satellite technology for educational purposes.
Which Indian launch vehicle was the first to achieve successful satellite deployment in orbit?- a)Satellite Launch Vehicle (SLV)
- b)Augmented Satellite Launch Vehicle (ASLV)
- c)Polar Satellite Launch Vehicle (PSLV)
- d)Geosynchronous Satellite Launch Vehicle (GSLV)
Correct answer is option 'A'. Can you explain this answer?
a)
Satellite Launch Vehicle (SLV)
b)
Augmented Satellite Launch Vehicle (ASLV)
c)
Polar Satellite Launch Vehicle (PSLV)
d)
Geosynchronous Satellite Launch Vehicle (GSLV)
|
|
Spectrum Coaching Institute answered |
The Satellite Launch Vehicle (SLV) was the first Indian launch vehicle to achieve successful satellite deployment in orbit. It successfully launched the Rohini satellite in July 1980.
What is the main purpose of the Indian National Satellite (INSAT)?- a)Monitoring and management of natural resources.
- b)Telecommunication, television broadcasting, and meteorological services.
- c)Studying cosmic phenomena.
- d)Conducting space exploration missions.
Correct answer is option 'B'. Can you explain this answer?
a)
Monitoring and management of natural resources.
b)
Telecommunication, television broadcasting, and meteorological services.
c)
Studying cosmic phenomena.
d)
Conducting space exploration missions.
|
|
Academic Studio answered |
The main purpose of the Indian National Satellite (INSAT), as mentioned in the text, is to provide telecommunication, television broadcasting, and meteorological services. It plays a vital role in communication and weather forecasting.
Which of the following is NOT a type of liquid propellant used in rocketry?- a)Cryogenic Propellants
- b)Hypergolic Propellants
- c)Petroleum Fuels
- d)Solid Propellants
Correct answer is option 'D'. Can you explain this answer?
a)
Cryogenic Propellants
b)
Hypergolic Propellants
c)
Petroleum Fuels
d)
Solid Propellants
|
|
Lohit Matani answered |
Solid propellants are not a type of liquid propellant. They are a separate category of rocket propellants, consisting of a solid mixture that burns to produce thrust.
What was the first satellite launched by ISRO for meteorological purposes?- a)METSAT
- b)INSAT-3D
- c)GSAT-6
- d)IRS-P6
Correct answer is option 'A'. Can you explain this answer?
a)
METSAT
b)
INSAT-3D
c)
GSAT-6
d)
IRS-P6
|
|
Lakshya Ias answered |
The first satellite launched by ISRO for meteorological purposes was METSAT, which was later named 'Kalpana.' It provided meteorological data and was a precursor to the INSAT systems.
What is the primary objective of the Indian Department of Space (DOS) with regard to space technology?- a)To explore the outer reaches of the universe.
- b)To develop space technology for military applications.
- c)To promote the development and application of space science and technology for national development.
- d)To establish colonies on other planets.
Correct answer is option 'C'. Can you explain this answer?
a)
To explore the outer reaches of the universe.
b)
To develop space technology for military applications.
c)
To promote the development and application of space science and technology for national development.
d)
To establish colonies on other planets.
|
|
Lakshya Ias answered |
The primary objective of the Indian Department of Space (DOS), as mentioned in the text, is to promote the development and application of space science and technology for national development. It focuses on using space technology for the benefit of the nation.
What is the role of the Space Commission in the Indian space program?- a)To conduct space research and experiments.
- b)To market space products and services.
- c)To formulate policies and oversee the implementation of the Indian space program.
- d)To develop and build satellites.
Correct answer is option 'C'. Can you explain this answer?
a)
To conduct space research and experiments.
b)
To market space products and services.
c)
To formulate policies and oversee the implementation of the Indian space program.
d)
To develop and build satellites.
|
|
Capstone Ias Learning answered |
The Space Commission is responsible for formulating policies and overseeing the implementation of the Indian space program, as mentioned in the provided text. It plays a crucial role in guiding the direction of India's space activities.
Which type of matter interacts with gravity but does not emit, absorb, or reflect light?- a)Dark Matter
- b)Negative Matter
- c)Antimatter
- d)Neutrinos
Correct answer is option 'A'. Can you explain this answer?
a)
Dark Matter
b)
Negative Matter
c)
Antimatter
d)
Neutrinos
|
|
Academic Studio answered |
Dark Matter is a type of matter that interacts with gravity but does not emit, absorb, or reflect light. It is "dark" because it is invisible to electromagnetic radiation, including light.
What is the hypothetical type of matter that, if it exists, would have negative mass and negative energy?- a)Dark Matter
- b)Antimatter
- c)Negative Matter
- d)Neutron Matter
Correct answer is option 'C'. Can you explain this answer?
a)
Dark Matter
b)
Antimatter
c)
Negative Matter
d)
Neutron Matter
|
|
T.S Academy answered |
Negative Matter is a hypothetical type of matter that, if it exists, would have negative mass and negative energy. It is believed to repel normal matter under gravity.
What is the primary application of Ku-band satellite frequency in Europe?- a)Weather radar
- b)Satellite mobile phones
- c)Direct broadcast satellite services
- d)Military radar
Correct answer is option 'C'. Can you explain this answer?
a)
Weather radar
b)
Satellite mobile phones
c)
Direct broadcast satellite services
d)
Military radar
|
|
EduRev UPSC answered |
In Europe, the Ku-band downlink is primarily used for direct broadcast satellite services, such as Astra. This frequency band is commonly associated with satellite television services.
What advantage do solid propellant rockets have over liquid propellant rockets?- a)Solid propellants can be throttled.
- b)Solid propellant rockets can be restarted.
- c)Solid propellant rockets are easier to store and handle.
- d)Solid propellant rockets can carry more payload.
Correct answer is option 'C'. Can you explain this answer?
a)
Solid propellants can be throttled.
b)
Solid propellant rockets can be restarted.
c)
Solid propellant rockets are easier to store and handle.
d)
Solid propellant rockets can carry more payload.
|
|
T.S Academy answered |
Solid propellant rockets are easier to store and handle compared to liquid propellant rockets. They do not require complex systems for fuel and oxidizer management and can be kept ready for launch for extended periods.
Chapter doubts & questions for Space Technology - Science & Technology for State PSC Exams 2025 is part of BPSC (Bihar) exam preparation. The chapters have been prepared according to the BPSC (Bihar) exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for BPSC (Bihar) 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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Science & Technology for State PSC Exams
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