State two uses for ultraviolet radiation.
Gamma rays are used in hospitals and industries for sterilization. Suggest and explain three precautions for the safe use or handling of radioactive gamma sources.
(i) State the speed in a vacuum of:
(ii) State a possible frequency for an infrasound wave.
198 exam-style questions on CIE IGCSE Physics Electromagnetic spectrum, covering Electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.