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5.2 Radioactivity

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Question 345

A container is designed to safely store a radioactive isotope that emits high-energy gamma (γ\gammaγ) radiation.

Which of the following materials is the most effective at absorbing this radiation to prevent it from escaping?

A

a sheet of paper

B

a sheet of aluminium

C

a block of lead

D

a thin layer of plastic

Markscheme

5.2 Radioactivity Questions

  1. IGCSE
  2. /Physics
  3. /5.2 Radioactivity

484 exam-style questions on CIE IGCSE Physics 5.2 Radioactivity, covering 5.2.1 Background radiation and measuring count rate, 5.2.2a Alpha, beta and gamma emission, 5.2.2b Deflection and ionising effects of nuclear radiation, 5.2.3a Radioactive decay, 5.2.3b Effects of decay on the nucleus and decay equations, 5.2.4a Half-life, 5.2.4b Choosing isotopes for applications, and 5.2.5 Effects of ionising radiation and safety precautions. Each one has a worked solution and a mark scheme showing where the marks go.

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