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When a Positronium Atom (Electron + Positron) Decays, It Emits

Question 14

Multiple Choice

When a positronium atom (electron + positron) decays, it emits two photons. What are the energies of the photons?

A) 0.511 MeV and 1.022 MeV
B) 0.225 MeV and 1.022 MeV
C) 0.225 MeV and 0.285 MeV
D) 0.256 MeV and 0.256 MeV
E) 0.511 MeV and 0.511 MeV

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