A 650-keV gamma ray Compton scatters from an electron. Determine the energy of the photon scattered and the recoil angle of the electron.
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b) Photon energy = 400 keV, Recoil angle = 45°
c) Photon energy = 520 keV, Recoil angle = 30°
d) Photon energy = 580 keV, Recoil angle = 60°