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CRPF CT/CISF HC Physics Questions with Answers & Explanations

17 Physics questions from the General Knowledge & Awareness section of CRPF CT/CISF HC, 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.

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Question 1

The SI unit of force is the

  1. APascal
  2. BWatt
  3. CNewton
  4. DJoule
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Answer: (C) Newton
Question 2

Sound cannot travel through

  1. AAir
  2. BSteel
  3. CWater
  4. DVacuum
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Answer: (D) Vacuum
Question 3

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

  1. ACylindrical lens
  2. BConvex lens
  3. CConcave lens
  4. DBifocal lens
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Answer: (C) Concave lens
Question 4

The acceleration due to gravity on Earth is about

  1. A1.6 m/s²
  2. B8.9 m/s²
  3. C10.8 m/s²
  4. D9.8 m/s²
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Answer: (D) 9.8 m/s²
Question 5

The SI unit of frequency is the

  1. AWatt
  2. BTesla
  3. CHertz
  4. DDecibel
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Answer: (C) Hertz
Question 6

The SI unit of electrical resistance is the

  1. AOhm
  2. BVolt
  3. CFarad
  4. DAmpere
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Answer: (A) Ohm
Question 7

The sky appears blue because of

  1. AScattering of light
  2. BDispersion of light
  3. CReflection of light
  4. DRefraction of light
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Answer: (A) Scattering of light
Question 8

Which is a good conductor of electricity?

  1. AWood
  2. BGlass
  3. CRubber
  4. DCopper
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Answer: (D) Copper
Question 9

The instrument used to measure atmospheric pressure is the

  1. AThermometer
  2. BAmmeter
  3. CBarometer
  4. DHygrometer
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Answer: (C) Barometer
Question 10

Which device converts mechanical energy into electrical energy?

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

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Question 11

A rainbow is formed due to

  1. APolarisation
  2. BDispersion and total internal reflection of light
  3. COnly reflection
  4. DScattering only
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Answer: (B) Dispersion and total internal reflection of light
Question 12

The SI unit of force is the

  1. AWatt
  2. BPascal
  3. CJoule
  4. DNewton
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Answer: (D) Newton
Question 13

The instrument used to measure electric current is the

  1. AGalvanometer only
  2. BOhmmeter
  3. CVoltmeter
  4. DAmmeter
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Answer: (D) Ammeter
Question 14

The SI unit of pressure is the

  1. APascal
  2. BJoule
  3. CNewton
  4. DBar
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Answer: (A) Pascal
Question 15

The speed of light in vacuum is about

  1. A3 × 10⁶ m/s
  2. B3 × 10⁸ m/s
  3. C340 m/s
  4. D3 × 10⁵ m/s
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Answer: (B) 3 × 10⁸ m/s
Question 16

The bending of light when it passes from one medium to another is called

  1. ADispersion
  2. BDiffraction
  3. CReflection
  4. DRefraction
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Answer: (D) Refraction
Question 17

The SI unit of electrical resistance is the

  1. AAmpere
  2. BOhm
  3. CVolt
  4. DFarad
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Answer: (B) Ohm

These are RankerClub practice questions written in the CRPF CT/CISF HC pattern. They are not official SSC/IBPS/RRB papers.

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