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Light with energy flux 18wcm^(-2) is inc...

Light with energy flux `18wcm^(-2)` is incident on a mirror of size `2cmxx2cm` normally. The force experienced by it and momentum delivered in one minute are

A

`0.48 mu N , 28.8 mu "kgms"^(-1)`

B

`48 mu N, 4.8 mu "kgms"^(-1)`

C

`28 mu N, 4.8 mu "kgms^(-1)`

D

`0.24 mu N , 28.8 mu "kgms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
Momentum `P=(U)/(C ) = (Iat)/(C )`,
`(P)/(t) = (IA)/(C ) `
Force ` F = (IA)/( C)`
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