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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