Q121 · Practice questionComplex familiar1 mark
QUESTION 121
In -minus decay, total lepton number is conserved because the emitted electron is accompanied by
(A)
an electron neutrino
(B)
a proton
(C)
an electron antineutrino
(D)
a photon
WORKED SOLUTION
1 markAnswer C
ANSWER
C. an electron antineutrino
Worked solution
Electron lepton number is for the electron and for the electron antineutrino, giving zero net change.
Selects the correct option.
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