Exam-style question
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When a neutron decays into a proton, what is the role of the emitted electron in terms of conservation laws?.
- A.It conserves baryon number
- B.It conserves lepton number
- C.It conserves energy
- D.It conserves strangeness
Model answer
What a good answer should say
- It conserves lepton number
Explanation
Why this works
The emitted electron is a lepton, and its presence ensures that the total lepton number remains constant during the decay process, adhering to the conservation of lepton number.
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