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The net mass energy of an electron is -

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Question

The net mass energy of an electron is

Options

  • 510 kev

  • 931 kev

  • 510 mev

  • 931 mev

MCQ

Solution

510 kev

Explanation:

Electron's net mass energy

E = M0C2 = `9 xx 10^-31 (3 xx 108)^2` joule

= `(9 xx 9 xx 10^-15)/(1.6 xx 10^-16)`

= kev

= 510 kev.

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