Physics MCQs with answers Page - 4

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Q. A jet engine works on the principle of conservation of

  • (A) Linear momentum
  • (B) Angular momentum
  • (C) Energy Mass
  • (D) Mass Velocity

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Q. Bolometer is used to measure

  • (A) Frequency
  • (B) Temperature
  • (C) Velocity
  • (D) Wavelength

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Q. Which of the following terms is not used in the field of physics?

  • (A) Latent heat
  • (B) Nuclear fusion
  • (C) Refractive index
  • (D) Stock value

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Q. Radiocarbon is produced in the atmosphere as a result of

  • (A) Collision between fast neutrons and nitrogen nuclei present in the atmosphere.
  • (B) Action of ultraviolet light from the sun on atmospheric oxygen.
  • (C) Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere.
  • (D) Lightning discharge in atmosphere.

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Q. It is easier to roll a stone up a sloping road than to lift it vertical upwards because

  • (A) Work done in rolling is more than in lifting.
  • (B) Work done in lifting the stone is equal to rolling it.
  • (C) Work done in both is same but the rate of doing work is less in rolling.
  • (D) Work done in rolling a stone is less than in lifting it.

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Q. The absorption of ink by blotting paper involves:

  • (A) Viscosity of ink
  • (B) Capillary action phenomenon
  • (C) Diffusion of ink through the blotting
  • (D) Siphon action

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Q. Siphon will fail to work if:

  • (A) The densities of the liquid in the two vessels are equal.
  • (B) The level of the liquid in the two vessels are at the same height.
  • (C) Both its limbs are of unequal length.
  • (D) The temperature of the liquids in the two vessels are the same.

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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

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Q. Nuclear sizes are expressed in a unit named

  • (A) Fermi
  • (B) Angstrom
  • (C) Newton
  • (D) Tesla

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Q. Light year is a unit of

  • (A) Time
  • (B) Distance
  • (C) Light
  • (D) Intensity of light

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