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4.3 Hazards and uses of radioactive emissions and of background radiation

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Question 10
H

A doctor uses a radioactive tracer to check how well a patient's kidneys are working. The tracer emits gamma radiation and has a half-life of 6 hours. The activity of the tracer when it is injected is 64 MBq.

a.

Calculate the activity of the tracer 24 hours after it is injected.

[3]
b.

Explain why a half-life of 6 hours is a suitable choice for this tracer.

[2]
c.

The tracer emits gamma radiation rather than alpha radiation. Explain why.

[2]
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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