Question 161: EM waves

Question

A radiation of energy $$E$$ falls normally on a perfectly reflecting surface. The momentum transferred to the surface is

Accepted Answer

Momentum of photon $$ = {E \over c}$$
Change in momentum $$ = {{2E} \over c}$$
$$=$$ momentum transferred to the surface
(the photon will reflect with same magnitude of momentum in opposite direction)

Answer

$$Ec$$

Answer

$$2E/c$$

Answer

$$E/c$$

Answer

$$E/{c^2}$$

EM waves

A radiation of energy $E$ falls normally on a perfectly reflecting surface. The momentum transferred to the surface is

Choose the correct answer: