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Question

Question: The linear momentum of a 3MeV photon is :...

The linear momentum of a 3MeV photon is :

A

0.01eV s m-1

B

0.02eV s m-1

C

0.03eV s m-1

D

0.04eV s m-1

Answer

0.01eV s m-1

Explanation

Solution

: Energy of a photon

E=3MeV=3×106eVE = 3 \mathrm { MeV } = 3 \times 10 ^ { 6 } \mathrm { eV }

Linear momentum of the photonp=Ecp = \frac { E } { c }

Where c is the speed of light in vacuum