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5.2 Radioactivity

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Question 63

In medical imaging departments, radiographers wear lead aprons when taking X-rays. What is the primary reason for using lead in these aprons?

A

Lead reflects the X-rays back to the imaging machine.

B

Lead absorbs the X-rays and prevents them from reaching the body's vital organs.

C

Lead neutralises the charge of the incoming X-ray photons.

D

Lead accelerates the X-rays to improve image contrast.

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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