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The minimum energy of the gamma ray photon required for the production of an electron positron pair is: ?->(Show Answer!)
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1. The minimum energy of the gamma ray photon required for the production of an electron positron pair is:
(A): 1.11 MeV
(B): 2.22 MeV
(C): 3.33 MeV
(D): 4.44 MeV
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