(Answered) Pair productiona gammaray interacts with the strong

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Pair production.

A γray interacts with the strong electric field of a nucleus and undergoes pair production. The electron is created with 126 keV of kinetic energy and the positron is given kinetic energy 138 keV.

(a). What was the energy of the γray?

(b). The positron slows down nearly to rest and annihilates with an electron. What happens?

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