Physics MCQ Questions with answers

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Here Important Physics MCQ questions are added which are frequently asked in almost all the examinations. You can check the correct answer of any question on clicking the show answer button. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping Share button.

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Q. Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:

  • (A) The heating effect of current alone
  • (B) Hysteresis loss alone
  • (C) Both the heating effect of current and hysteresis loss
  • (D) Intense sunlight at noon
📝 Notes
✅ Correct Answer: (C) Both the heating effect of current and hysteresis loss

Published by Mr. Dubey ⭐ 111.22K Points at 27-Jul-2021 12:23 pm in Physics

Q. Nuclear sizes are expressed in a unit named

  • (A) Fermi
  • (B) Angstrom
  • (C) Newton
  • (D) Tesla
📝 Notes
✅ Correct Answer: (A) Fermi

Published by Mr. Dubey ⭐ 111.22K Points at 27-Jul-2021 12:24 pm in Physics

Q. Light year is a unit of

  • (A) Time
  • (B) Distance
  • (C) Light
  • (D) Intensity of light
📝 Notes
✅ Correct Answer: (B) Distance

Published by Mr. Dubey ⭐ 111.22K Points at 27-Jul-2021 12:24 pm in Physics

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
📝 Notes
✅ Correct Answer: (A) Unequal heating of different parts of the atmosphere
Explanation: Mirages happen when the ground is very hot and the air is cool. The hot ground warms a layer of air just above the ground. When the light moves through the cold air and into the layer of hot air it is refracted (bent). A layer of very warm air near the ground refracts the light from the sky nearly into a U-shaped bend.

Published by Mr. Dubey ⭐ 111.22K Points at 27-Jul-2021 12:26 pm in Physics

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
📝 Notes
✅ Correct Answer: (B) The earth rotates from west to east

Published by Mr. Dubey ⭐ 111.22K Points at 27-Jul-2021 12:27 pm in Physics

Q. Pa(Pascal) is the unit for

  • (A) Thrust
  • (B) Pressure
  • (C) Frequency
  • (D) Conductivity
📝 Notes
✅ Correct Answer: (B) Pressure

Published by Mr. Dubey ⭐ 111.22K Points at 27-Jul-2021 12:28 pm in Physics

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.
📝 Notes
✅ Correct Answer: (D) They are nearer to earth and hence we receive a greater amount of light.

Published by Mr. Dubey ⭐ 111.22K Points at 27-Jul-2021 12:28 pm in Physics

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.
📝 Notes
✅ Correct Answer: (A) They contain free electrons.

Published by Mr. Dubey ⭐ 111.22K Points at 27-Jul-2021 12:29 pm in Physics

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
📝 Notes
✅ Correct Answer: (B) will not rise

Published by Mr. Dubey ⭐ 111.22K Points at 27-Jul-2021 12:29 pm in Physics

Q. Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?

  • (A) Pressure and Young's modules
  • (B) Planck's constant and Angular momentum
  • (C) Impulse and moment of force
  • (D) Force and rate of change of linear momentum
📝 Notes
✅ Correct Answer: (C) Impulse and moment of force

Published by Yogesh ⭐ 7.67K Points at 29-Jul-2021 08:35 am in Physics

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