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.
42 exam-style questions on CIE IGCSE Physics 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.