An educational physics laboratory is designing a storage container to safely house several radioactive demonstration sources, including alpha, beta, and gamma emitters.
Which material is best suited for lining the container to prevent the escape of the most penetrating radiation?
plastic
aluminium
lead
wood
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.