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.

1. Consider the following regarding the differences between ‘holography’ and ‘photography’:

  1. When a photograph is cut in half, each piece shows half of the scene. When a hologram is cut in half, the whole scene can still be seen in each piece.
  2. A lens is required in photography to record the image, whereas in holography, the light from the object is scattered directly onto the recording medium.

Select the statement(s) which is/are correct?

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

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2. With reference to various properties of X-Rays, which among the following statements is / are correct?
1.The Hard X-Rays have a shorter wavelength than the Soft X-Rays
2.The X-Rays are deflected by the Electric Field, but are not deflected by the Magnetic Field
3.X-Rays don’t show many properties of light such as Refraction, diffraction, Interference and Polarization
Choose the correct option from the codes given below:

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

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3. Which among the following can produce virtual image?

  1. Converging lens
  2. Concave Mirror
  3. Flat Mirror

Select the correct option from the codes given below:

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

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4. If we look at the floating piece of iceberg on the sea, approximately what fraction of it is visible above the seawater level?

[A] 1/8th
[B] 1/6th
[C] 1/10th
[D] 1/5th

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5. Consider the following:
1. Formation of a rainbow
2. Dispersion of light,
3. A coin appears raised when placed in a trough filled with water
Which among the above refraction?

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

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6. The FM transmission of music is of very good quality in comparison to AM transmission. Consider the following statements with this reference:

  1. The AM signals are more susceptible to noise
  2. The FM receiver locks itself to catch stronger signal only
  3. The wavelength of AM waves is much higher in comparison to the FM waves

Which among the above is / are correct statements?

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

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7. You are sitting inside an open vehicle moving with uniform speed. When you throw a stone vertically upwards, the stone will fall__:

[A] Ahead of you
[B] Behind you
[C] Over you
[D] Either ahead or behind of you

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8. With reference to the phase changes in matter, which of the following is / are correct statements?

  1. When a liquid freezes, it releases thermal energy into its immediate environment.
  2. When a solid melts, it releases thermal energy into its immediate environment.
  3. When a solid melts, its temperature increases

Select the correct option from the codes given below:

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

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9. Which among the following Radio frequencies are used around the world in air navigational system?

[A] Very Low Frequency (VLF)
[B] Very High Frequency (VHF)
[C] Tetrahertz Radiation (THF)
[D] Ultra High Frequency (UHF)

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10. What is the difference between GSLV and PSLV?
1. While PSLV is designed mainly to deliver the earth-observation satellites, GSLV is designed mainly to deliver the communication-satellites
2. While PSLV is a three stage vehicle, GSLV is four stage vehicle
Select the correct option from the codes given below:

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

Show Answer

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