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Physics (AS & A Level) · May / June 2026 · Paper 12 · Question 38

9702Atoms, nuclei and radiation

A nucleus P undergoes β+ decay, becoming nucleus Q and emitting two particles X and Y as shown. P → Q + X + Y Which two particles are X and Y?

  1. Aelectron and antineutrino
  2. Belectron and neutrino
  3. Cpositron and antineutrino
  4. Dpositron and neutrino

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Correct answer: D. positron and neutrino

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