UPSC 1995 › Science & Technology › Physics
8 questions · 1995 · answers as per the UPSC key
A parachutist jumps from a height of 5000 metres. The relationship between his falling speed ‘v’ and the distance fallen through ‘d’ is best represented as (four graphs labelled a, b, c, d).
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Which one of the following can be used to confirm whether drinking water contains a gamma-emitting isotope or not?
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The normal temperature of human body on the Kelvin scale is
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When the same note is played on a sitar and a flute, the sound produced can be distinguished from each other because of the difference in
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Assertion (A): A diamond sparkles more than a glass imitation cut to the same shape.
Reason (R): The refractive index of diamond is less than that of glass. In the context of the above two statements, which one of the following is correct?
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Optical fibre works on the principle of
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Suppose a rocketship is receding from the earth at a speed of 2⁄10th the velocity of light. A light in the rocketship appears blue to the passengers on the ship. What colour would it appear to an observer on the earth?
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An air bubble in water will act like a