Radioactive sources must be handled with care in school or scientific laboratories to reduce the risk of exposure to ionizing radiation.
Which of the following is not a recommended safety procedure?
Storing radioactive sources in a lead-lined container when not in use.
Handling radioactive sources with bare hands to ensure a firm grip.
Pointing the active side of the source away from people at all times.
Wearing a film badge (dosimeter) to monitor cumulative radiation exposure.
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.