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4.3 Hazards and uses of radioactive emissions and of background radiation

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Question 3
F

Two sealed sources contain the same number of undecayed nuclei. Source X has a half-life of 6 hours. Source Y has a half-life of 6 years. Which statement about the two sources is correct?

[1]
A

Source Y has the higher activity, and it stays radioactive for longer

B

Source X has the lower activity, and it stays radioactive for longer

C

Source Y has the higher activity, and it stays radioactive for a shorter time

D

Source X has the higher activity, and it stays radioactive for a shorter time

Markscheme

4.3 Hazards and uses of radioactive emissions and of background radiation Questions

  1. GCSE
  2. /Physics
  3. /4.3 Hazards and uses of radioactive emissions and of background radiation

40 exam-style questions on AQA GCSE Physics 4.3 Hazards and uses of radioactive emissions and of background radiation, covering 4.3.1 Background radiation, 4.3.2 Different half-lives of radioactive isotopes, and 4.3.3 Uses of nuclear radiation. Each one has a worked solution and a mark scheme showing where the marks go.

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