Radiation P is used in a microwave oven. Radiation Q is used to reveal fluorescent security markings. Which statement correctly compares these radiations?
P has the higher frequency; Q mainly causes skin burns by heating.
Q has the higher frequency; P mainly causes mutations.
P has the higher frequency; Q can damage surface cells.
Q has the higher frequency; P can cause internal heating.
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.