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Question

What is the momentum of photon of energy 3 MeV in kgms1?

A
9×1021
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B
1.6×1021
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C
3×1028
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D
9×1028
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Solution

The correct option is B 1.6×1021
p=EC=3×106×1.6×10193×108=1.6×1021kgms1

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