In dental clinics, dentists use diagnostic XXX-rays to inspect deep tooth structures but must stand behind a protective screen or leave the room during the exposure. In contrast, they require no such shielding when using visible blue light lamps to cure composite fillings.
Explain why these safety precautions are necessary for the dentist during XXX-ray imaging but not when using visible light.
25 exam-style questions on Edexcel GCSE Physics 5.4 Uses and dangers of EM radiation. Each one has a worked solution and a mark scheme showing where the marks go.