Which statement correctly explains why thick lead containers are used to store radioactive isotopes that emit highly penetrating γ\gammaγ-radiation?
Lead absorbs the radiation, preventing it from escaping into the surroundings.
Lead decreases the half-life of the radioactive isotope.
Lead increases the half-life of the radioactive isotope.
Lead magnetic fields reflect the emitted radiation back to stabilize the isotope.
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.