Question
Question: γ-rays radiation can be used to create electron-positron pair. In this process of pair production, γ...
γ-rays radiation can be used to create electron-positron pair. In this process of pair production, γ-rays energy cannot be less than.
A
5.0 MeV
B
4.02 MeV
C
15.0 MeV
D
1.02 MeV
Answer
1.02 MeV
Explanation
Solution
Energy released by γ−rays for pair production must be greater than 1.02 MeV.