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Q. Clear sky is blue in colour, why?
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Q. The power of a lens is measured in:
Q. Angle of friction & angle of repose are
Q. Oil raise up the wick in a lamp. The principle involves
Q. In a filament type light bulb most of the electric power consumed appears as
Q. Electromagnetic radiation is emitted by
Q. The ink of a pen leaks out in an airplane because
Q. Which of the following cannot be polarized?
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