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

Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 for SSC CGL 2025 is part of SSC CGL Previous Year Papers 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 2025 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 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 6
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 7
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Which of the following is a unit of distance?
[SSC CGL 07/12/2022 (1st Shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 7
Light-year is the distance a beam of light travels in a single Earth year, or 6 trillion miles. 1 light year = 9.46 × 10¹⁵ m and the velocity of light in vacuum = 3 × 10⁸ m/s. Other units of distance are 1 fermi (1 fm) = 10⁻¹⁵ m, 1 angstrom (1 Å) = 10⁻¹⁰ m, 1 astronomical unit (1 AU) = 1.496 × 10¹¹ m, and 1 parsec = 3.08 × 10¹⁶ m.
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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What is the defined value of kB in the given equation?
KB = PV/TN
[SSC CPO 09/11/2022 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 9
1.38×10⁻²³ J K⁻¹. The Boltzmann constant (kB) is introduced by Max Planck and named after Ludwig Boltzmann. The value of Boltzmann constant is mathematically expressed as k = (R / NA), where k is Boltzmann’s constant, NA is Avogadro's number, and R is the gas constant. The Boltzmann constant relates a gas subatomic particle's average kinetic energy to its temperature.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 10
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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 10
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 11
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What is the unit to measure the wavelength of light?
[SSC MTS 12/10/2021 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 11
Angstrom (Å) is equal to 10⁻¹⁰ metre, or 0.1 nanometre.
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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"Svedberg Unit” is a unit of _________?
[SSC CGL 13/08/2021 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 13
Time. The Svedberg unit is a measurement of the sedimentation rate of a particle when it is centrifuged. It is represented by the symbol S and is defined as exactly 10⁻¹³ seconds.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 14
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Weber per second is equivalent to ______.
[SSC CGL 18/08/2021 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 14
Volt. The unit and physical quantities: ‘coulomb’ is Electric charge, ‘ohm’ is Electric Resistance, and ‘ampere’ is Electric current.
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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Ball and spring model of chemical bonds obey:
[SSC MTS 08/09/2023 (1st Shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 18
Hooke's law. For small deformations, stress is directly proportional to strain for many materials. The constant of proportionality is called modulus of elasticity. Hooke’s law is valid only in the linear part of the stress-strain curve.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 19
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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 19
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 20
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The radius of curvature of a charged particle's passage in a homogeneous magnetic field is proportional to:
[SSC CHSL 08/08/2023 (4th shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 20
Momentum of the particle. The radius of the circular path followed by a charged particle moving in a magnetic field is given by the formula: r = (mv)/(qB), where m is the mass, v is the velocity, q is the charge, and B is the strength of the magnetic field. The radius is proportional to the momentum of the particle.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 21
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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 21
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 22
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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 22
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 23
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What is the starting voltage of an AA battery used for home gadgets such as remote controls, small toys, and wireless kitchen appliances?
[SSC CHSL 27/05/2022 (Afternoon)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 23
1.5 V. AA batteries commonly provide a starting voltage of 1.5 V, which is used in various home gadgets.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 24
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Which equation was verified by American scientists Nichols and Hull in 1903 by measuring the radiation pressure of visible light?
[SSC CHSL 17/08/2023 (4th shift)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 24
P = U/C. Radiation pressure is the mechanical pressure applied on any surface due to the exchange of momentum between the electromagnetic field and the object.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 25
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‘(gnomon)’ is a part of the _______.
[SSC CGL 21/04/2022 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 25
Solar Clock. The gnomon is the part of a sundial that casts the shadow, and it is probably also the world's oldest astronomical instrument. A bolometer is an instrument for measuring radiation by means of the rise in temperature of a blackened metal strip in one of the arms of a resistance bridge.
Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 26
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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 26
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 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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Q.246. In the Millikan’s Oil Drop experiment, the oil drop is subjected to such forces whose nature does NOT fall under the category of: [SSC CPO 23/11/2020 (Morning)]
Detailed Solution for Test: SSC CGL Previous Year Questions: Physics (2023-20) - 3 - Question 29

Millikan's oil drop experiment measured the charge of an electron. Electrically charged oil droplets entered the electric field and were balanced between two plates by altering the field.

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

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.

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