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4.3 Hazards and uses of radioactive emissions and of background radiation

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Question 28
H

A gamma emitter is chosen for a medical tracer rather than a beta emitter with the same half-life. Which statement best explains this choice?

[1]
A

Beta particles are more penetrating, so the image that is formed would be blurred

B

Beta particles are absorbed by the tissue, so they ionise it and are not detected

C

Beta particles have a shorter range in air, so the detector must touch the skin

D

Beta particles are not deflected by a magnetic field, so they cannot be focused

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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