Which row correctly matches three radioactive sources with different properties to their practical or industrial uses?
| Emits α\alphaα-particles and has a long half-life | Emits β\betaβ-particles and has a long half-life | Emits γ \gamma\,γ radiation and has a long half-life | |
|---|---|---|---|
| A | monitoring the thickness of paper | smoke detector | sterilising medical instruments |
| B | smoke detector | monitoring the thickness of paper | sterilising medical instruments |
| C | sterilising medical instruments | monitoring the thickness of paper | smoke detector |
| D | smoke detector | sterilising medical instruments | monitoring the thickness of paper |
Row A
Row B
Row C
Row D
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.