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4.3 Hazards and uses of radioactive emissions and of background radiation

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Question 13
F

During radiotherapy the gamma source is rotated around the patient, with the tumour at the centre of the circle. What is the advantage of doing this?

[1]
A

The tumour receives a high dose while the surrounding tissue receives less

B

The tumour receives a lower dose, so fewer of the healthy cells are destroyed

C

The surrounding tissue absorbs more radiation, which protects the tumour cells

D

The dose to the tumour is spread over a longer time, so treatment is faster

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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