What is the Magnet substance ?

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What is the velocity of wireless waves ?

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Why are the girders on the railway bridges fixed at one end only?

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What secondary color of light is produced by mixing the primary colors of red and blue?

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Explain what is time?

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Explain about Ultraviolet rays?

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Explain planck’s hypothesis or what the postulates of planck’s quantum theory? (Or) what are the assumptions of quantum theory of black body radiation? : quantum physics

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What is the Ordinary magnet ?

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What is Force ?

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Why is diamond so bright ?

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Which of the surfaces of a thermos flask are silvered and why?

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Explain Solution ?

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