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Light with energy flux 36Wm^(-3) is inci...

Light with energy flux `36Wm^(-3)` is incident on a circular part of radius `1.4m` of a perfectly balck body. The force experienced by the body and the momentum delivered in `10 minutes` are

A

`2.2 mu N, 7.2 mu "kgms"^(-1)`

B

`3.5 mu N , 7.4 mu "kgms"^(-1)`

C

`0.74 mu N , 444 mu "kgms"^(-1)`

D

`7.4 mu N , 2.2 mu "kgms"^(-1)`

Text Solution

Verified by Experts

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