A fluorescent lamp produces ultraviolet radiation inside a tube. A coating absorbs this radiation and emits visible light. Which statement describes the coating?
It reflects visible light without a change and produces ultraviolet by cooling.
It gains energy from visible light and transfers energy away as ultraviolet.
It reflects ultraviolet without a change and produces visible light by cooling.
It gains energy from ultraviolet and transfers energy away as visible light.
104 exam-style questions on Edexcel GCSE Physics 5.4 Uses and dangers of EM radiation, covering 5.4.1 Dangers of electromagnetic radiation, 5.4.2 Uses of electromagnetic radiation, 5.4.3 Radio waves and oscillations in circuits, and 5.4.4 Changes in atoms and nuclei generating radiation. Each one has a worked solution and a mark scheme showing where the marks go.