Radioactive source S S\,S emits α\alphaα-particles, β\betaβ-particles, and γ\gammaγ-rays. A detector is placed 10 cm away from SSS. A thin sheet of aluminium (2 mm thick) is placed between the source and the detector.
Which emissions from the source can be detected?
α\alphaα-particles and β\betaβ-particles only
β\betaβ-particles and γ\gammaγ-rays only
γ\gammaγ-rays only
α\alphaα-particles and γ\gammaγ-rays only
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.