Physics Unit32: Elementary Particles (id: 26da1548a)

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本题目来源于试卷: Physics Unit32: Elementary Particles，类别为 Generic Physics

[单选题]
When a positronium atom (electron + positron)mv-n5 o coh8(-iv9vhu decaywyx*8urvxn2 9 5(x8 xcktqoy2s, it emits two photons. What are the energies ywo 5yq2x xk8vcx2xu 9rt(8n*of the photons?

A. 0.511 MeV and 1.022 MeV
B. 0.225 MeV and 0.285 MeV
C. 0.256 MeV and 0.256 MeV
D. 0.511 MeV and 0.511 MeV


参考答案:  D


本题详细解析: 暂无