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A plane e.m. wave of wave intensity 6W//...

A plane e.m. wave of wave intensity `6W//m^2` strikes a small mirror of area `30cm^2`, held perpendicular to the approaching wave. The momentum transfered in `kgms^-1` by the wave to the mirror each second will be

A

`6.4xx10^(-7) kg-m//s`

B

`4.8xx10^(-8) kg-m//s`

C

`3.2xx10^(-9) kg-m//s`

D

`1.6xx10^(-10) kg-m//s`

Text Solution

Verified by Experts

The correct Answer is:
D
`P=(2U)/(C )=(2delta_(av)A)/(C )`
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