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An e.m. wave with poynting vector 6watt/...

An e.m. wave with poynting vector `6watt//m^2` is absorbed by a surface of area `12m^2`. Find the force on the surface.

A

24N

B

`24 xx 10^(10)`N

C

`24 xx 10^(-10)`N

D

`24 xx 10^(-8)`N

Text Solution

Verified by Experts

The correct Answer is:
D
`F = PA : P = (1)/( c)`
`therefore F = (1A)/( c ) = ( 6 xx 12)/( 3 xx 10^5) = 24 xx 10^(-6) N`
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