Physics(General Knowledge > General Science ) Questions and Answers

Question 1. Which of the following terms is not used in the field of physics?
  1.    Latent heat
  2.    Nuclear fusion
  3.    Refractive index
  4.    Stock value
Explanation:-
Answer: Option D. -> Stock value
Question 2. It is easier to roll a stone up a sloping road than to lift it vertical upwards because
  1.    Work done in rolling is more than in lifting.
  2.    Work done in lifting the stone is equal to rolling it.
  3.    Work done in both is same but the rate of doing work is less in rolling.
  4.    Work done in rolling a stone is less than in lifting it.
Explanation:-
Answer: Option D. -> Work done in rolling a stone is less than in lifting it.
Question 3. Radiocarbon is produced in the atmosphere as a result of
  1.    Collision between fast neutrons and nitrogen nuclei present in the atmosphere.
  2.    Action of ultraviolet light from the sun on atmospheric oxygen.
  3.    Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere.
  4.    Lightning discharge in atmosphere.
Explanation:-
Answer: Option A. -> Collision between fast neutrons and nitrogen nuclei present in the atmosphere.
Question 4. Siphon will fail to work if:
  1.    The densities of the liquid in the two vessels are equal.
  2.    The level of the liquid in the two vessels are at the same height.
  3.    Both its limbs are of unequal length.
  4.    The temperature of the liquids in the two vessels are the same.
Explanation:-
Answer: Option B. -> The level of the liquid in the two vessels are at the same height.
Question 5. The absorption of ink by blotting paper involves:
  1.    Viscosity of ink
  2.    Capillary action phenomenon
  3.    Diffusion of ink through the blotting
  4.    Siphon action
Explanation:-
Answer: Option B. -> Capillary action phenomenon
Question 6. Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:
  1.    The heating effect of current alone
  2.    Hysteresis loss alone
  3.    Both the heating effect of current and hysteresis loss
  4.    Intense sunlight at noon
Explanation:-
Answer: Option C. -> Both the heating effect of current and hysteresis loss
Question 7. Nuclear sizes are expressed in a unit named
  1.    Fermi
  2.    Angstrom
  3.    Newton
  4.    Tesla
Explanation:-
Answer: Option A. -> Fermi
Question 8. Mirage is due to:
  1.    Unequal heating of different parts of the atmosphere
  2.    Magnetic disturbances in the atmosphere
  3.    Depletion of ozone layer in the atmosphere
  4.    Equal heating of different parts of the atmosphere
Explanation:-
Answer: Option A. -> Unequal heating of different parts of the atmosphere
Question 9. Light year is a unit of
  1.    Time
  2.    Distance
  3.    Light
  4.    Intensity of light
Explanation:-
Answer: Option B. -> Distance
Question 10. Light from the Sun reaches us in nearly
  1.    2 minutes
  2.    4 minutes
  3.    8 minutes
  4.    16 minutes
Explanation:-
Answer: Option C. -> 8 minutes
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