A student says that visible light is used for fibre optic communications, and that infrared is used in electrical heaters. Which statement about the student's two uses is correct?
Both of the uses given by the student are correct.
Only the fibre optic use given by the student is correct.
Only the electrical heater use given by the student is correct.
Neither of the two uses given by the student is correct.
40 exam-style questions on AQA GCSE Physics 6.2 Electromagnetic waves, covering 6.2.1 Types of electromagnetic waves, 6.2.2 Properties of electromagnetic waves 1, 6.2.3 Properties of electromagnetic waves 2, 6.2.4 Uses and applications of electromagnetic waves, 6.2.5 Lenses, and 6.2.6 Visible light. Each one has a worked solution and a mark scheme showing where the marks go.