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n' photons of wavelength 'lamda' are abs...

n' photons of wavelength `'lamda'` are absorbed by a black body of mass 'm'. The momentum gained by the body is

A

`h/(mlamda)`

B

`(mnh)/lamda`

C

`(nh)/(mlamda)`

D

`(nh)/(lamda)`

Text Solution

Verified by Experts

The correct Answer is:
D
Energy of n photons , `E = (nhc)/lamda`
Momentum gained by the body , `p = E/c = (nhc)/(lamdac)=(nh)/lamda`
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