A container is designed to safely store materials that emit highly penetrating gamma (γ\gammaγ) radiation. Which of the following materials is most effective for lining this container to absorb the gamma radiation?
paper
plastic
aluminium
lead
134 exam-style questions on CIE IGCSE Physics 5.2.2a Alpha, beta and gamma emission. Each one has a worked solution and a mark scheme showing where the marks go.