Answer to Question #109189 in Atomic and Nuclear Physics for Tanya

Question

A single photon of energy 100 MeV decays into an electron and a positron. Which of the following
statements is true?
(a) It does not violate any of the above conservation laws.
(b) This process violates energy momentum conservation.
(c) This process violates angular momentum conservation
(d) This process violates lepton number conservation.

Answer 1

The law of conservation of energy and momentum is performed using the principle of uncertainty.

Answer: (a) It does not violate any of the above conservation laws.