AIPMT | 2015Heat TransferHard

Question

A radiation of energy ′E′ falls normally on a perfectly reflecting surface. The momentum transferred to the surface is (C = Velocity of light) :-

Options

A.2E/C
B.2E/C2
C.E/C2
D.E/C

Solution

                          
Momentum of light p = E/C
So momentum transferred to the surface
pƒ − pi = 2E/C

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