Categories > Nuclei > Nucleus > A gamma ray photon creates an electron- positron pair. If the rest mass energy of an electron is 0.5 MeV and the total K.E. of the electron- positron pair is 0.78 MeV, then the energy of the gamma ray photon must be

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Question: A gamma ray photon creates an electron- positron pair. If the rest mass energy of an electron is 0.5 MeV and the total K.E. of the electron- positron pair is 0.78 MeV, then the energy of the gamma ray photon must be


1) 0.78 MeV
2) 1.78 MeV
3) 1.28 MeV
4) 0.28 MeV
Solution: Explanation: No Explanation
Nucleus Nuclear Reaction Modern Physics

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