A plane electromagnetic wave is incident on a plane surface of area A, – McqOptions

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1.	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 force exerted on the surface is (c =speed of light)
A.	\[\frac{2E}{Atc}\]
B.	\[\frac{E}{2c}\]
C.	\[\frac{2E}{ct}\]
D.	zero
Answer» D. zero

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