A student says that all electromagnetic waves travel at the same velocity. Which statement about the student's idea is correct?
The student is right, but only through a vacuum or through air.
The student is right, and this is true through every substance.
The student is wrong, because the velocity depends on the source.
The student is wrong, because the velocity depends on the detector.
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.