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SSC CGL Exam  >  SSC CGL Tests  >  Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - SSC CGL MCQ

Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - SSC CGL MCQ


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30 Questions MCQ Test - Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3

Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 for SSC CGL 2024 is part of SSC CGL preparation. The Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 questions and answers have been prepared according to the SSC CGL exam syllabus.The Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 MCQs are made for SSC CGL 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 below.
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Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 1
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What is an instrument that sends pulses of electromagnetic energy into the atmosphere to detect rainfall, determine its speed and intensity, and identify precipitation types such as rain, snow or hail?
[SSC CGL 21/07/2023 (3rd shift)]

Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 1
Doppler weather radar (weather surveillance radar); Designed and developed by ISRO and Manufactured by Bharat Electronics Limited (BEL), Bengaluru. Barometer - Measures atmospheric pressure; invented by Evangelista Torricelli (1643). Spectral Pyranometer - Measures solar irradiance on a planar surface; 2D Sonic Anemometer - Detects the horizontal component of the wind speed and wind direction.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 2
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Which physical unit is defined as the field intensity that produces one newton (N) of force per ampere (A) per meter of the conductor?
[SSC CGL 26/07/2023 (4th shift)]

Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 2
Tesla. It is the derived unit of magnetic flux density, which represents the strength of the magnetic field, usually expressed in microtesla (µT). It is equivalent to one weber per meter squared (1 Wb / m2).
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Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 3
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 Match the points under List I with those under List II.

[SSC CHSL Tier II (26/06/2023)]

Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 3

The first sextant was produced by John Bird.
Thermopile was developed by Leopoldo Nobili and Macedonio Melloni. A pyrometer, invented by Josiah Wedgwood.

Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 4
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The Wind Vane instrument measures the _______.
[SSC MTS 15/05/2023 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 4
Wind Vane measures wind-direction. Other instruments: Relative humidity - Hygrometer, Temperature - Thermometer, Wind velocity - Anemometer, Rain gauge - Rainfall.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 5
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Which among the following is a unit of measurement that describes the rate at which the universe is expanding?
[SSC CHSL 21/03/2023 (1st Shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 5
Hubble constant. The Faraday constant represents the amount of electric charge carried by one mole, or Avogadro's number, of electrons. 1 Faraday = F = e × NA ⇒ 9.64853321 × 10⁴ Coulomb per mole. The Planck constant (ML²T⁻¹) and Angular momentum (ML²T⁻¹) have the same dimension.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 6
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What is the numerical value of a physical quantity?
[SSC CGL 06/12/2022 (2nd Shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 6
Magnitude. Examples of physical quantities (that can be measured using numbers) are mass, amount of substance, length, time, temperature, electric current, light intensity, force, velocity, density, and many others.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 7
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What is the commercial unit of electric energy?
[SSC CGL 06/12/2022 (4th Shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 7
Kilowatt hour (KWh). 1 kilowatt hour = 3.6 x 10⁶ joules. Electrical Energy: {SI unit: Joule} The energy derived from the flow of electric charge is called electrical energy.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 8
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Which measuring instrument consists of a metal triangular frame supported on three legs, used to measure the radius of curvature of an object such as lenses and curved mirrors which are spherical in shape?
[SSC CGL 12/12/2022 (4th Shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 8
Spherometer. A Viscometer (viscosimeter) is an instrument used to measure the viscosity of a fluid. Vernier caliper is used for the measurement of linear dimensions. The Screw gauge measures the diameter or radius or thickness of a thin wire or the thickness of a thin metal sheet with utmost accuracy.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 9
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How is the voltmeter connected across the points between which the potential difference is to be measured?
[SSC CHSL 30/05/2022 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 9
In parallel. A voltmeter is an instrument used for measuring the potential difference, or voltage, between two points in an electrical or electronic circuit. They are typically represented by a circle with the letter V inside.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 10
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Of the units mentioned in the options, which one is the largest as compared to the others?
[SSC MTS 05/10/2021 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 10
Tera is a unit prefix in the metric system denoting multiplication by one trillion, or 10¹². Hecto means hundred or 10². Deca means 10. Giga means 10⁹.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 11
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Which of the following has the same dimension as that of linear momentum?
[SSC CGL 13/08/2021 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 11
Impulse. Linear momentum is dimensionally represented as [M¹ L¹ T⁻¹]. Momentum is mass in motion and represented as Mass × Velocity. Impulse is the increase or decrease of an object’s momentum. Therefore, the dimensional formulas of Momentum and Impulse are the same.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 12
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Electron-volt is a unit of ______.
[SSC CGL 13/08/2021 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 12
Energy. It is commonly used in atomic and nuclear physics. One electron volt is equal to 1.602 × 10⁻¹² erg, or 1.602 × 10⁻¹⁹ joule.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 13
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In terms of SI prefixes, 10⁻¹⁵ is called:
[SSC CGL 24/08/2021 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 13
Femto. The other SI prefixes are: Zepto = 10⁻²¹, Atto = 10⁻¹⁸, Yocto = 10⁻²⁴, Pico = 10⁻¹².
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 14
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The difference in temperature between two bodies is 30 degree Celsius. What is the difference in degree Fahrenheit?
[SSC CPO 23/11/2020 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 14
The temperature T in degrees Fahrenheit (°F) is equal to the temperature T in degrees Celsius (°C) times 9/5 plus 32. Change in degree Fahrenheit = 1.8 × 30 = 54.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 15
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‘Mho’ is the unit of ______ of a substance.
[SSC CPO 25/11/2020 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 15
Conductance. The SI unit of resistance is ohm. Resistance and conductance are inverses of each other (mho = 1/ohm).
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 16
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30°C = ______ Kelvin (approximately).
[SSC CPO 25/11/2020 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 16
0°C = 273.15K, so 30°C = (273.15 + 30) Kelvin = 303.15 Kelvin ≈ 303 Kelvin.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 17
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An electric generator and an electric motor work in the principle of:
[SSC Stenographer 12/10/2023 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 17
Fleming's right and left-hand rule, respectively. A right hand and left hand are stretched so that the thumb, middle finger, and index finger form a 90-degree angle with each other. The thumb represents the direction of motion or force (F), the middle finger the direction of current (I), and the index finger the direction of magnetic field (B).
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 18
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In 1928, which equation was derived and combines quantum theory and special relativity to describe the behaviour of an electron moving at a relativistic speed?
[SSC CPO 05/10/2023 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 18
Dirac Equation. It was formulated by physicist Paul Dirac and describes the behavior of relativistic electrons in quantum mechanics.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 19
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What is the name of the thermionic electron tube used to oscillate and amplify microwave frequency signals?
[SSC CHSL 04/08/2023 (4th shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 19
Klystron. Developed by Russell and Sigurd Varian, the Klystron is based on the principle of velocity modulation. It is used for oscillating and amplifying microwave frequency signals.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 20
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Which of the following is the right relationship between geometric length (Lg) and magnetic length (Lm)?
[SSC CHSL 08/08/2023 (1st shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 20
Lm = Lg × 5/6. The magnetic length is the distance between the two poles of the magnet, whereas the geometric length is the actual length of the magnet.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 21
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Identify an application in which solar cells are not used.
[SSC CGL 18/07/2023 (3rd shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 21
Lift system. A solar cell (photovoltaic cell) is an electronic device that converts the energy of light directly into electricity by the photovoltaic effect. Radio is the technology of signaling and communicating using radio waves (frequency between 3 Hz and 3,000 GHz).
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 22
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Air _____ on heating and ________ on cooling.
[SSC MTS 12/05/2023 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 22
Expands, contracts. Heating air causes the air molecules to gain thermal energy, move faster, and spread out, resulting in the expansion of air and a decrease in air density. Cooling air causes the air molecules to lose thermal energy, slow down, and come closer together, leading to the contraction of air and an increase in air density.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 23
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According to the Nebular hypothesis, how does a galaxy form?
[Graduate Level 04/08/2022 (Shift - 2)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 23
According to the nebular hypothesis, gravity caused gas and dust to turn into larger and more compact
clouds. This theory was developed by Immanuel Kant and modified in 1796 by Pierre Laplace. Theories : Georges Lemaitre proposed the Big Bang Theory, 1931. Steady State Theory (1948) by Hermann Bondi, Thomas Gold, and Sir Fred Hoyle.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 24
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Which of the following claims concerning the magnetic lines of force inside a bar magnet is true?
[SSC CHSL 11/08/2023 (1st shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 24
Magnetic field lines are imaginary lines around the magnet. The magnitude of a field is indicated by its line's density. Near the South and North Pole of a magnet, the magnetic field is stronger and gets weaker as it moves away from the poles. The magnetic field lines go from the North pole to the South pole of the magnet.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 25
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Decrease in which of the following factors leads to an increase in the rate of evaporation?
[SSC CGL 20/04/2022 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 25
Evaporation -Process by which a liquid is transformed into vapour. Humidity - Concentration of water vapour present in the air. Ambient temperature - Air temperature of any object or environment where equipment is stored. Wind Gradient - Rate of increase of wind strength with unit increase in height above ground level.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 26
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______ is used to measure the pressure inside the eyes of a person.
[SSC CGL 24/08/2021 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 26
Viscometer is used to measure the viscosity of fluids.
An odometer is an instrument used to measure the distance traveled by a vehicle like a bicycle or a car. A Machmeter is a flight instrument that gives a ratio of airspeed and speed of sound.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 27
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Which everyday morning ritual is part of quantum mechanics?
[SSC CHSL 09/08/2021 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 27
Quantum mechanics deals with the behavior of matter and light on a subatomic and atomic level. Examples -lasers, electron microscopes, magnetic resonance imaging (MRI) devices and the components used in computing hardware.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 28
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Which of the following cells is NOT used in watches?
[SSC CHSL 10/08/2021 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 28
It is a type of rechargeable battery first invented in 1859 by French physicist Gaston Plante.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 29
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A set of equations involving electric and magnetic fields, and their sources, the charge and current densities are known as ______ equations.   [SSC CPO 24/11/2020 (Evening)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 29

Maxwell's. Maxwell first used the equations to propose that light is an electromagnetic phenomenon. Newton’s equation is related to kinematics and motion Einstein’s equation is related to the Theory of relativity. Bohr's equation is related to atomic physics.

Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 30
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Which of the following elements occurs most abundantly in our universe?   [SSC CHSL 14/10/2020 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 30

Hydrogen being the simplest element is the most abundant element in the universe.

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