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Q. Mirage is due to
Mirage is due to unequal heating of different parts of the atmosphere.
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Q. The focal length of the lens in a photographic camera is 5 cm. What is the power of the lens?
Q. The locomotion of insects to the source of light is called :
Q. Inside an aeroplane, flying at a high altitude
Q. Energy conversions in loudspeaker are
Q. Superconductors are substances which
Q. The value of coefficient of restitution in perfectly elastic collision is
Q. Why a weather balloon is not fully inflated on the ground?
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