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A-LevelPhysicsParticle physics9702/12 · May/June 2017 · Q401 Mark

During β⁻ decay, which change takes place to the quark composition of the nucleus that emits the β⁻ particle, and which other particle is emitted? [Table with columns: quark change, other particle emitted. Rows for A, B, C, D show different changes and particles.]

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Aquark change: down to up, other particle emitted: antineutrino
Bquark change: down to up, other particle emitted: neutrino
Cquark change: up to down, other particle emitted: antineutrino
Dquark change: up to down, other particle emitted: neutrino

✓ Correct answer

A: quark change: down to up, other particle emitted: antineutrino

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About this question

Topic
Particle physics, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source
A-Level Physics, May/June 2017 Paper 1 Variant 2, question 40.

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