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The graph shows how the number of atoms of a radioactive isotope in a sample varies with time. A graph showing the radioactive decay of an isotope sample Activity is the rate at which a source of unstable nuclei decays. Determine the activity of the radioactive sample at 200 seconds. Give the unit.

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Atoms and nuclear radiation Questions

Practise AQA GCSE Physics Atoms and nuclear radiation with exam-style questions for Foundation and Higher tier. 21 questions covering Radioactive decay and nuclear radiation, Nuclear equations, Half-lives and the random nature of radioactive decay, and Radioactive contamination, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Atoms and nuclear radiation Questions

  1. GCSE
  2. /Physics
  3. /Atoms and nuclear radiation