Why is a thick concrete shield constructed around the core of a nuclear reactor?
Concrete absorbs highly penetrating radiation, such as gamma rays and neutrons.
Concrete decreases the half-life of the radioactive fuel.
Concrete increases the half-life of the radioactive fuel.
Concrete chemically neutralizes the emissions from the radioactive sources.
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.