Q. $\gamma$-rays radiation can be used to create electron-positron pair. In this process of pair production, $\gamma$-rays energy cannot be less than
A) $5.0\ MeV$
B) $4.02\ MeV$
C) $15.0\ MeV$
D) $1.02\ MeV$
Explanation
(d) Energy released by $\gamma -$rays for pair production must be greater than $1.02\ MeV$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.