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4.3 Hazards and uses of radioactive emissions and of background radiation

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Question 29
H

During external radiotherapy the gamma beam passes through healthy tissue before it reaches the tumour. Which statement about that healthy tissue is correct?

[1]
A

It receives a dose, so the beam is aimed at the tumour from several directions

B

It receives no dose, because the beam is focused only inside the tumour itself

C

It receives a dose, but the cells cannot be damaged because they are healthy

D

It receives no dose, because gamma radiation is only very weakly ionising

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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