A radioactive source emitting β\betaβ-particles is used during a school laboratory demonstration.
Which safety precaution must be taken by the person handling the source?
Handle the source with long-handled tongs.
Wear disposable cotton gloves to fully block the radiation.
Heat the source before use to reduce its radioactivity.
Store the source in a standard cardboard box when not in use.
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.