Physics 0625 · IGCSE · Radioactivity

Radioactivity — practice question

The graph indicates how the count rate of a radioactive isotope varies over time. What is the half-life for this isotope?

  • A$2.0\,\text{s}$
  • B$6.0\,\text{s}$
  • C$12\,\text{s}$
  • D$53\,\text{s}$

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