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The energy of a photon, whose momentum is 10 MeV/c, where c is the speed of light, is given by

10 MeV
100 MeV
1 MeV
0.1 MeV

Correct Answer: 10 MeV

Explanation:

A photon’s relativistic momentum is given by the equation,E = pc where p is the momentum.

P = 10 MeV/c

So, E = 10 MeV

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