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5.2 Radioactivity

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Question 241

Which radioactive source is used in a system to monitor the thickness of paper sheet as it is manufactured, and what is the reason for this?

A

β\betaβ — penetration is not affected by paper thickness

B

β\betaβ — penetration is highly sensitive to paper thickness

C

γ\gammaγ — penetration is not affected by paper thickness

D

γ\gammaγ — penetration is highly sensitive to paper thickness

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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