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Q. When a person enters a dark room from bright light, he is not able to see clearly for a while because-
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Q. SONAR is based on the principle of
Q. Water boils at a lower temperature on the hills as
Q. If the distance between two charges is halved, then the force between them becomes
Q. Weight of a body in an orbiting satellite is
Q. Hygrometer is used to measure
Q. The unit of specific heat capacity is
Q. The energy of a photon, whose momentum is 10 MeV/c, where c is the speed of light, is given by
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