MCQ
$\gamma$-rays radiation can be used to create electron-positron pair. In this process of pair production, $\gamma$-rays energy cannot be less than .......$MeV$
- A$5$
- B$4.02$
- C$15$
- ✓$1.02 $
✓
Answer
Correct option: D.
$1.02 $
d
(d) Energy released by $\gamma - $ rays for pair production must be greater than $1.02\, MeV.$
(d) Energy released by $\gamma - $ rays for pair production must be greater than $1.02\, MeV.$
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