Questions
A radiation of energy ‘E’ falls normally on a perfectly reflecting surface. The momentum transferred to the surface is (C = Velocity of light )
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Correct option is D
Energy of radiation, E=hv=hCλ Also, its momentum p=hλ=EC=pipr=-pi=-ECSo, momentum transferred to the surface =pi-pr=EC--EC=2ECSimilar Questions
A plane electromagnetic wave of intensity of strikes a small mirror of area , held perpendicular to the approaching wave. The radiation force on the mirror will be
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