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Q. Pipelines in cold countries often burst in winter, because
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Q. Intensity of sound at a point is __________ its distance from the source.
Q. White clothes are cooler than black ones as they
Q. If a magnet is cut into two pieces of equal length
Q. Atomic explosion is triggered by
Q. The audible range of sound for an average adult human being is ______.
Q. Which one of the following is the main cause of magnetic decay in PMMC type instrument ?
Q. The best colours for a sun umbrella will be
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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