A gamma-ray photon creates an electron-positron pair each
A gamma-ray photon creates an electron-positron pair, each with a kinetic energy of 260 keV.
1. What was the energy of the photon?
2. What was the wavelength of the photon?
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a gamma-ray photon creates an electron-positron pair each with a kinetic energy of 260 kev1 what was the energy of the
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