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The pressure exerted by an electromagnet...

The pressure exerted by an electromagnetic wave of intensity l `("watt/m"^(2))` on a nonreflecting surface is [c is the velocity of light]

A

Ic

B

`Ic^(2)`

C

I/c

D

`I//c^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Pressure = Force /area
`I = ("Energy")/("area-time")=(F.s)/(At) = (Fc)/(A) `or I/c =P
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