Question

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)
(a) zero (b) E/Atc
(c) 2E/Atc (d) E/c

Answer 1

Answer:

The answer is

(c) 2E/Atc

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Answer 2

Answer:

option c

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