Multiple Choice
A positron (or antielectron) is made to stop in a sample of matter.Soon after,how many gamma rays are observed with what energy each?
A) two,0.511 MeV each
B) one,0.511 MeV
C) none
D) two,13.6 eV each
E) one,13.6 eV
Correct Answer:

Verified
Correct Answer:
Verified
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