BITSAT 2020 Paper

Section: Physics

Question : 37 of 150

Marks: +1, -0

A plane electromagnetic wave is incident on a plane surface of area A, normally and is perfectly reflected. If energy E strikes the surface in time t then average pressure exerted on the surface is (c = speed of light)

zero
E/Atc
2E/Atc
E/c

Validate

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