Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Nuclei

Question:

$\gamma$-rays radiation can be used to create electron-positron pair. In this process of pair production, $\gamma$ rays energy cannot be less than

Options:

5.0 MeV

4.02 MeV

15.0 MeV

1.02 MeV

Correct Answer:

1.02 MeV

Explanation:

Energy released by $\gamma$ - rays for pair production must be greater than 1.02 MeV.