A teacher conducts an experiment to measure radiation passing through a sheet of material.
Three students suggest ways the teacher can reduce her exposure to radiation:
Which students are correct?
1 and 2 only
2 and 3 only
3 only
1, 2 and 3
42 exam-style questions on CIE IGCSE Physics 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.