Question

The net mass energy of an electron is

विकल्प

• 510 kev

• 931 kev

• 510 mev

• 931 mev

Answer 1

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.