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5.2 Radioactivity

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Question 212

Of the three types of ionising radiation, α\alphaα, β \beta\,β and γ\gammaγ, why does γ\gammaγ-radiation cause the least ionisation?

A

γ\gammaγ-radiation has the greatest mass.

B

γ\gammaγ-radiation has the largest electric charge.

C

γ\gammaγ-radiation has no mass and no charge.

D

γ\gammaγ-radiation travels at the slowest speed.

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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