Physics MCQs with answers Page - 5

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Admin • 802.91K Points
Coach

Q. Mirage is due to:

  • (A) Unequal heating of different parts of the atmosphere
  • (B) Magnetic disturbances in the atmosphere
  • (C) Depletion of ozone layer in the atmosphere
  • (D) Equal heating of different parts of the atmosphere

A

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Q. Stars appears to move from east to west because

  • (A) All stars move from east to west
  • (B) The earth rotates from west to east
  • (C) The earth rotates from east to west
  • (D) The background of the stars moves from west to east

A

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Q. Planets do not twinkle because

  • (A) They emit light of a constant intensity
  • (B) Their distance from the earth does not change with time
  • (C) They are very far away from the earth resulting in decrease in intensity of light
  • (D) They are nearer to earth and hence we receive a greater amount of light.

A

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Q. Metals are good conductors of electricity because:

  • (A) They contain free electrons.
  • (B) The atoms are lightly packed.
  • (C) They have high melting point.
  • (D) All of the above.

A

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Q. Let a thin capillary tube be replaced with another tube of insufficient length then, we find water

  • (A) will overflow
  • (B) will not rise
  • (C) depressed
  • (D) change its meniscus

A

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Q. If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same:

  • (A) Velocity
  • (B) Momentum
  • (C) Acceleration
  • (D) Kinetic energy

A

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Q. Rectifiers are used to convert:

  • (A) Direct current to Alternating current
  • (B) Alternating current to Direct current
  • (C) High voltage to low voltage
  • (D) Low voltage to high voltage

A

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Q. Out of the following, which is not emitted by radioactive substance?

  • (A) Electrons
  • (B) Electromagnetic radiations
  • (C) Alpha particles
  • (D) Neutrons

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