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SSC CGL Physics Questions with Answers & Explanations

16 Physics questions from the General Awareness section of SSC CGL, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.

Question 1

The acceleration due to gravity on Earth is about

  1. A10.8 m/s²
  2. B8.9 m/s²
  3. C9.8 m/s²
  4. D1.6 m/s²
Show answer
Answer: (C) 9.8 m/s²
Question 2

Which device converts mechanical energy into electrical energy?

  1. AGenerator
  2. BMotor
  3. CBattery
  4. DTransformer
Show answer
Answer: (A) Generator
Question 3

The sky appears blue because of

  1. ADispersion of light
  2. BScattering of light
  3. CReflection of light
  4. DRefraction of light
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Answer: (B) Scattering of light
Question 4

The SI unit of work and energy is the

  1. AWatt
  2. BJoule
  3. CNewton
  4. DPascal
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Answer: (B) Joule
Question 5

Sound cannot travel through

  1. ASteel
  2. BAir
  3. CVacuum
  4. DWater
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Answer: (C) Vacuum
Question 6

The SI unit of electric current is the

  1. ACoulomb
  2. BVolt
  3. CAmpere
  4. DOhm
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Answer: (C) Ampere
Question 7

The acceleration due to gravity on Earth is about

  1. A9.8 m/s²
  2. B8.9 m/s²
  3. C10.8 m/s²
  4. D1.6 m/s²
Show answer
Answer: (A) 9.8 m/s²
Question 8

The instrument used to measure atmospheric pressure is the

  1. AAmmeter
  2. BThermometer
  3. CBarometer
  4. DHygrometer
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Answer: (C) Barometer
Question 9

Which lens is used to correct myopia (short-sightedness)?

  1. ABifocal lens
  2. BCylindrical lens
  3. CConcave lens
  4. DConvex lens
Show answer
Answer: (C) Concave lens
Question 10

Newton's first law of motion is also called the law of

  1. AGravitation
  2. BInertia
  3. CAcceleration
  4. DMomentum
Show answer
Answer: (B) Inertia

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Question 11

The unit of momentum is

  1. Akg·m/s
  2. BN/m
  3. CJ/s
  4. Dkg·m/s²
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Answer: (A) kg·m/s
Question 12

The SI unit of pressure is the

  1. ABar
  2. BPascal
  3. CJoule
  4. DNewton
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Answer: (B) Pascal
Question 13

The SI unit of power is the

  1. AJoule
  2. BWatt
  3. CVolt
  4. DAmpere
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Answer: (B) Watt
Question 14

The SI unit of electrical resistance is the

  1. AFarad
  2. BAmpere
  3. CVolt
  4. DOhm
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Answer: (D) Ohm
Question 15

Ultrasound has a frequency greater than

  1. A20 Hz
  2. B200 Hz
  3. C2,000 Hz
  4. D20,000 Hz
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Answer: (D) 20,000 Hz
Question 16

The speed of light in vacuum is about

  1. A3 × 10⁸ m/s
  2. B3 × 10⁶ m/s
  3. C340 m/s
  4. D3 × 10⁵ m/s
Show answer
Answer: (A) 3 × 10⁸ m/s

These are RankerClub practice questions written in the SSC CGL pattern. They are not official SSC/IBPS/RRB papers.

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