When an electron meets a positron:

  1. they bounce off
  2. nothing happens
  3. they form a proton
  4. they annihilate, producing gamma-ray photons
Answer

D) they annihilate, producing gamma-ray photons

Mass → energy. SLO P-11-F-09 · Understanding

Physics MCQ · More Nuclear and Particle Physics MCQs · Practise