When a Positron and an Electron Combine,the Result Is Annihilation

question 15

Multiple Choice

When a positron and an electron combine,the result is annihilation radiation of:

• A) two photons of 1.022 MeV.
• B) two photons of 0.511 MeV.
• C) two photons of 180 MeV.
• D) multiple gamma photons.

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