Food can be preserved by exposing it to gamma rays, which is a process of irradiation. In contrast, radioactive dust settling on a worker's protective suit in a nuclear decommissioning facility is an example of radioactive contamination.
State two differences between irradiation and radioactive contamination.
94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity. Each one has a worked solution and a mark scheme showing where the marks go.