Physics

Physics

Problem

Two photons are produced when an electron and a positron, both at rest before interaction, annihilate each other. The energy of each photon is closest to a) 0.661 MeV0.661\text{ MeV} b) 0.511 MeV0.511\text{ MeV} c) 1.022 MeV1.022\text{ MeV} d) 0.255 MeV0.255\text{ MeV}

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