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Question

A free nucleus of mass 24 amu, intially at rest emits a gamma photon. The energy of the photon is 7MeV. The kinetic energy of recoiling nucleus is approximately equal to [Take; 1 amu=9.31MeV]

A
3.3keV
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B
4.4keV
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C
1.1keV
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D
2.5keV
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