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5.2 Radioactivity

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Question 61

Three statements about alpha (α\alphaα) particles and beta (β\betaβ) particles are listed:

  1. The magnitude of the charge on an α\alphaα-particle is twice the charge on a β\betaβ-particle.
  2. The mass of an α\alphaα-particle is much greater than the mass of a β\betaβ-particle.
  3. The average speed of an α\alphaα-particle on emission is greater than that of a β\betaβ-particle.

Which statements help to explain why α\alphaα-particles have a much shorter range in air than β\betaβ-particles?

A

1, 2 and 3

B

1 and 2 only

C

1 and 3 only

D

2 and 3 only

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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