A medical physicist is preparing a high-activity cobalt-60 source to calibrate a stereotactic radiosurgery machine.
State one safety precaution, other than wearing personal protective equipment (such as a lead apron), that the physicist should take to minimise their radiation exposure during this procedure.
94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity, covering 6.5.1 Uses of radioactivity, 6.5.2 Dangers of ionising radiation and precautions, 6.5.3 Half-life and radiation dangers, 6.5.4 Safety precautions for radiation exposure, and 6.5.5 Contamination and irradiation. Each one has a worked solution and a mark scheme showing where the marks go.