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5.2 Radioactivity

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Question 33

A laboratory technician is working near a radioactive source that emits γ\gammaγ-rays.

Which action will not reduce the radiation dose received by the technician?

A

Placing a thick sheet of lead between the technician and the source.

B

Leaving the room as quickly as possible to minimize exposure time.

C

Increasing the air pressure in the laboratory.

D

Using long-handled tongs to increase the distance from 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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