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5.2 Radioactivity

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Question 56

A technician needs to handle a radioactive source that emits γ\gammaγ-rays.

Which of the following actions will not reduce the amount of radiation that reaches the technician?

A

Keeping the source inside a sealed vacuum chamber

B

Minimizing the time spent near the source

C

Placing a thick lead shield between the technician and the source

D

Maximizing the distance between the technician and the source

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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