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0 votes
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in Physics by (91.2k points)
closed
A radiation of energy `E` falls normally on a perfctly refelecting surface . The momentum transferred to the surface is
A. `Ec`
B. `2E//c`
C. `E//c`
D. `E//c^(2)`

1 Answer

0 votes
by (93.6k points)
 
Best answer
Correct Answer - B
Momentum of photon `= (E)/(c )`
change in momentum`= (2E)/(c )`
= momeutum transferred to the surface
(the photon will reflect with same magnitude of momentum in opposite direction)

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