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. Which of the following cases amount to be some work done in terms of Physics?

  1. A man pushing a wall but failing to move it
  2. A coolie standing with a load of 12 kg on his head
  3. A boy climbing up a staircase
  4. A boy carrying a box on his head and sliding over a frictionless horizontal surface

Select the correct option from the codes given below:

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

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2. With reference to the virtual images and real images, consider the following statements:
1. While real image can be obtained on screen, virtual image cannot be obtained on screen.
2. While real image is always inverted, virtual image is always erect
Which among the above is / are correct statements?

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

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3. The X-Rays and Gamma Rays are similar to each other in which of the following respects?

  1. They have almost similar wavelengths
  2. They have almost similar penetrating capacity
  3. They are electromagnetic waves
  4. They travel with speed of light
  5. Both are ionizing in nature

Select the correct option from the codes given below:

[A] Only 2, 3, 4 & 5
[B] Only 3, 4, 5
[C] Only 1, 2 & 3
[D] Only 3 & 4

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4. 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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5. 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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6. Which of the following lie in the Tetra hertz frequency?

[A] Visible Light and Infra Red
[B] Infra Red and Microwaves
[C] Microwaves and Radio Waves
[D] Visible Light and Ultraviolet light

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7. In which of the following respects, the Light waves are different from sound waves?

  1. Light waves are electromagnetic but sound waves are not
  2. Light waves can travel through water but sound waves cannot
  3. Light travels with the same speed in all media
  4. Light waves produce interference but sound waves do not

Select the correct option from the codes given below:

[A] Only 1
[B] Only 1, 2 & 3
[C] Only 1 & 4
[D] None

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8. If the frequency of a sound wave is reduced to half of its original value, then the speed of sound wave will:
 

[A] reduce to half of its original value
[B] double to that of its original value
[C] increase fourfold of its original value
[D] remain same

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9. 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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10. With reference to the Milky way galaxy, which among the following statements is / are correct?
1.The Milky Way is a member of the Virgo super cluster
2.The two most massive members of the Virgo super cluster are the Milky Way and the Andromeda Galaxy
Choose the correct option from the codes given below:

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

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