Physics (AS & A Level) · May / June 2016 · Paper 11 · Question 38
Which statement describes β⁻ decay in terms of a simple quark model?
- AA down quark changes to an up quark and emits an electron and an electron antineutrino.
- BA down quark changes to an up quark and emits a positron and an electron neutrino.
- CAn up quark changes to a down quark and emits an electron and an electron antineutrino.
- DAn up quark changes to a down quark and emits a positron and an electron neutrino.
As printed in the paper
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Correct answer: A. A down quark changes to an up quark and emits an electron and an electron antineutrino.
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