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5.2 Radioactivity

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Question 38

Which of the following instruments is specifically used to detect ionising nuclear radiation and record its count rate?

A

A light-dependent resistor (LDR) connected to an ohmmeter

B

A Geiger–Müller (GM) tube connected to a counter

C

A thermopile connected to a galvanometer

D

A photodiode connected to a voltmeter

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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