Practicing Success
$\gamma$-rays radiation can be used to create electron-positron pair. In this process of pair production, $\gamma$ rays energy cannot be less than |
5.0 MeV 4.02 MeV 15.0 MeV 1.02 MeV |
1.02 MeV |
Energy released by $\gamma$ - rays for pair production must be greater than 1.02 MeV. |