A Levels Physics (9702)•9702/13/M/J/21
Explanation
Quark charges determine baryon electric charge
Steps:
- Assign charges: up (+2/3), down (-1/3), strange (-1/3).
- Compute total charge for each composition.
- Option A: down + down + up = -1/3 -1/3 +2/3 = 0.
- Options B and C: up + down + strange = +2/3 -1/3 -1/3 = 0 (identical).
- Option D: up + strange + strange = +2/3 -1/3 -1/3 = 0.
Not enough information: The charge value is unspecified; all options yield neutral hadrons (charge 0), so none fit a charged hadron.
Why D is correct:
- Not applicable; ambiguous question.
Why the others are wrong:
- A: Forms neutral neutron.
- B: Forms neutral Lambda/Sigma^0.
- C: Identical to B, neutral.
Final answer: Not enough information.
Topic: Fundamental particles
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