A-LevelPhysicsParticle physics9702/12 · May/June 2020 · Q401 Mark

A hadron has a charge of -e and is composed of three quarks. What could be the quark composition of the hadron? [Figure 40.1]

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AThree strange quarks (s s s)

BOne up quark and two strange quarks (u s s)

CTwo up quarks and one strange quark (u u s)

DThree up quarks (u u u)

✓ Correct answer

A: Three strange quarks (s s s)

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Topic: Particle physics, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2020 Paper 1 Variant 2, question 40.

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