General Science - Physics MCQs

Physics Objective (Multiple Choice) General Knowledge & General Science Questions & Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examinations.

11. With respect to the measurements of the acceleration g due to the gravity of the Earth, different values of g are found at different?

  1. Depths
  2. Altitudes
  3. Longitudes
  4. Latitudes

Select the correct option from the codes given below:

[A] 1& 2
[B] 1, 2 & 3
[C] 1, 2 & 4
[D] 1, 2, 3 & 4

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12. Which among the following can hear the sound in the frequency range which human cannot hear?

  1. Bats
  2. Dogs
  3. Dolphins

Select the correct option from the codes given below:

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

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13. Ultrasounds are used extensively in industries and for medical purposes. Which among the following is / are applications of Ultrasound?

  1. Detect cracks and flaws in metal blocks
  2. Echocardiography
  3. Treatment of Kidney stones
  4. Cleaning of odd shaped objects

Select the correct option from the codes given below:

[A] Only 1 & 2
[B] Only 1, 2 & 3
[C] Only 1, 3 & 4
[D] 1, 2, 3 & 4

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14.  Consider the following statements:

  1. Low pitch sound has low frequency and high pitch of sound has high frequency
  2. Soft sound has small pitch and louder sound has large pitch

Which among the above statements is / are correct?

[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 nor 2

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15. Consider the following physical quantities:

  1. Speed
  2. Velocity
  3. Amplitude
  4. Acceleration

Which of the above remain unchanged during Uniform Circular Motion?

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] Only 2 & 4

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16. Consider the following physical quantities:

  1. Entropy 
  2. Work
  3. Momentum
  4. Force

Which of the above are vector quantities?

[A] 1 & 2
[B] 2 & 3
[C] 3 & 4
[D] 1 & 4

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17. The propagation of the Radio Waves in the atmosphere of earth is affected by ___:
1. Reflection
2. Refraction
3. Diffraction
4. Absorption
Choose the correct option from the codes given below:

[A] Only 1, 2 & 3
[B] Only 1, 3 & 4
[C] Only 1, 2 & 4
[D] 1, 2, 3 & 4

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18. All metals are good conductors of heat. What could be the reason(s) behind this?
1.The molecules in them collide very freely
2.They contain free electrons
3.The molecules in them are very close to each other
Choose the correct option from the codes given below:

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

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19. Which of the following makes a CD or DVD show rainbow pattern?

[A] Diffraction of the Light
[B] Thin-Film Interference of the light
[C] Scattering of the light
[D] Polarisation of the light

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20. If a Candle is make to burn in Zero Gravity__:

[A] The Candle will burn for a very long time compared to normal gravity
[B] The flame of the candle will become round
[C] There is no impact of gravity on the burning of candle
[D] The Candle will not burn in zero gravity

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