One amu is equivalent to 931 MeV energy. The rest mass of electron is 9.1×10-31 kg. The mass energy is 1 amu=1.67×10-27 kg

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0.5073 MeV

0.693 MeV

4.0093 MeV

None of these

answer is A.

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Detailed Solution

The mass of electron =9.1×10-311.67×10-27∴ E=9.1×10-311.67×10-27×931 MeV= 0.5073MeV

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