Physics 0625 · IGCSE · Radioactivity

Radioactivity — practice question

The energy produced by stable stars comes from nuclear reactions. What type of reaction takes place in the Sun?

  • AHelium nuclei break up to give hydrogen nuclei.
  • BHelium nuclei join together to form hydrogen nuclei.
  • CHydrogen nuclei break up to give helium nuclei.
  • DHydrogen nuclei join together to form helium nuclei.

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