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Radiations of intensity 0.5 W//m^(2) are...

Radiations of intensity `0.5 W//m^(2)` are striking a metal plate. The pressure on the plate is

A

`0.166 xx 10^(-8) Nm^(-2)`

B

`0.332 xx 10^(-8) Nm^(-2)`

C

`0.111 xx 10^(-8) Nm^(-2)`

D

`0.083 xx 10^(-8) Nm^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
B
As metal is reflecting surfaces for reflecting surface radiation pressure,
`P_(r) = (2S)/(c) = (2 xx 0.5)/(3 xx 10^(8)) = 0.332 xx 10^(-8) Nm^(-2)`
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