The electromagnetic spectrum is described as a continuous spectrum. What does this tell you about the spectrum?
Every group in the spectrum contains the same range of wavelengths.
Every wave in the spectrum is emitted by its source at the same time.
Every wave in the spectrum can be detected by the unaided human eye.
Every wavelength within the range of the spectrum exists somewhere in it.
93 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.