Sealed packs of medical instruments must be sterilised without being opened. A treatment room uses gamma radiation, with staff operating the source remotely from behind a thick concrete wall.
Explain why gamma radiation is suitable for sterilising the packs and how the arrangement reduces the risk to staff.
104 exam-style questions on Edexcel GCSE Physics 5.4 Uses and dangers of EM radiation, covering 5.4.1 Dangers of electromagnetic radiation, 5.4.2 Uses of electromagnetic radiation, 5.4.3 Radio waves and oscillations in circuits, and 5.4.4 Changes in atoms and nuclei generating radiation. Each one has a worked solution and a mark scheme showing where the marks go.