Question
Question: What should be the maximum wavelength of a γ-ray photon to produce a pair of electron and positron? ...
What should be the maximum wavelength of a γ-ray photon to produce a pair of electron and positron?
Given : me = 9.1 × 10–31 kg ; c = 3 × 108 m/sec
A
0.006Å
B
0.012Å
C
0.024Å
D
None of these
Answer
0.012Å
Explanation
Solution
> 2mec2