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5.2 Radioactivity

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Question 289

Why can a thin sheet of paper or a few centimetres of air easily stop α\alphaα-particles?

A

Alpha radiation is strongly ionising and so is very penetrating.

B

Alpha radiation is strongly ionising and so is not very penetrating.

C

Alpha radiation is weakly ionising and so is very penetrating.

D

Alpha radiation is weakly ionising and so is not very penetrating.

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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