Physics 0625 · IGCSE · Radioactivity

Radioactivity — practice question

The graph illustrates the activity of a radioactive source over time. What is the half-life of the source?

  • A$1.0\,\text{minute}$
  • B$2.0\,\text{minutes}$
  • C$2.5\,\text{minutes}$
  • D$4.0\,\text{minutes}$

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