Physics 9702 · AS & A Level · Fundamental particles

Fundamental particles — practice question

A single neutron decays into a proton, a $\beta^{-}$ particle and an antineutrino. Which row shows the quark structure of the neutron and of the proton, together with the force responsible for this reaction?

  • Aneutron: down, down, up; proton: down, up, up; strong interaction
  • Bneutron: down, down, up; proton: down, up, up; weak interaction
  • Cneutron: down, up, up; proton: down, down, up; strong interaction
  • Dneutron: down, up, up; proton: down, down, up; weak interaction

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI