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5.2 Radioactivity

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Question 84

Which statement about alpha, beta, and gamma radiation is not correct?

A

Alpha particles are more ionising than beta particles.

B

Beta-minus (β−\beta^-β−) particles are deflected towards the positive plate in an electric field.

C

Gamma radiation is deflected by a strong electric field.

D

Alpha particles are stopped by a few centimetres of air.

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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