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General Knowledge on Physics | GK Test on Physics Page 14
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Physics

General Knowledge on Physics

(Click on suggested Options to select the answer | Color Red means : Wrong & Green Means: Correct)

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131. Radiocarbon dating technique is used to estimate the age of
132. Large astronomical telescopes always use as objective
133. Sound of frequency below 20 Hz is called
134. 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
  • Check Answer | Discussion
135. 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
  • Check Answer | Discussion
136. Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?
137. Pick out the scalar quantity
138. Stars twinkle because
  • A. the intensity of light emitted by them changes with time
  • B. the distance of the stars from the earth changes with time
  • C. the refractive index of the different layers of the earth's atmosphere changes continuously, consequently the position of the im
  • D. the light from the star is scattered by the dust particles and air molecules in the earth's atmosphere
  • Check Answer | Discussion
139. Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this? DiffusionRefractionInternal reflection
140. Solar eclipse will take place when
  • A. the sun is between the moon and the earth
  • B. the earth is between the moon and the sun
  • C. the moon is between the sun and the earth
  • D. the moon does not lie on the line joining the sun and the earth
  • Check Answer | Discussion

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