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Photon of frequency v has a momentum associated with it... | null (Physics) | DivineJEE

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Physics

JEE Mains

Physics

Photon of frequency

v

has a momentum associated with it. If

c

is the velocity of light, the momentum is

A

hv/c

B

v/c

C

h

v

c

D

hv/{c^2}

Correct Answer:

A

Explanation

Energy of a photon of frequency

v

is given by

E = hv.

Also,

E = m{c^2},\,\,m{c^2} = hv

\Rightarrow mc = {{hv} \over C} \Rightarrow p = {{hv} \over c}

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