CUET Preparation Today
The rest energy of an electron is |
510 KeV 931 KeV 510 MeV 931 MeV |
510 KeV |
Rest energy of an electron $=m_e c^2$ Here $m_e=9.1 \times 10^{-31}$ kg and c = velocity of light ∴ Rest energy $=9.1 \times 10^{-31} \times\left(3 \times 10^8\right)^2$ joule $=\frac{9.1 \times 10^{-31} \times\left(3 \times 10^8\right)^2}{1.6 \times 10^{-19}}$ eV = 510 keV |
