A house has several devices that use electromagnetic radiation.
A television remote control sends signals to a television.
Give the type of electromagnetic radiation used by the remote control.
A dish on the roof of the house receives television signals from a satellite.
Give two types of electromagnetic radiation that are used for satellite transmissions.
A security system switches on a light when it detects a person in the garden at night.
Suggest the type of electromagnetic radiation detected by the security system.
Give a reason why this radiation can be detected in the dark.
Inside a fluorescent lamp, ultraviolet radiation is produced. A coating on the inside of the glass absorbs the ultraviolet radiation and emits visible light.
Explain why the coating is needed for the lamp to be used for illumination.
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.