Some of the components of the electromagnetic spectrum, in order of increasing frequency, are shown:
radio wavesmicrowave radiationinfrared radiationultraviolet radiationX-rays \text{radio waves} \quad \text{microwave radiation} \quad \text{infrared radiation} \quad \text{ultraviolet radiation} \quad \text{X-rays} radio wavesmicrowave radiationinfrared radiationultraviolet radiationX-raysState the speed at which all electromagnetic waves travel in a vacuum.
State which of the components of the electromagnetic spectrum shown has the longest wavelength.
Two components of the electromagnetic spectrum are not listed above. State the names of these components. 1. 2.
One application of infrared radiation is in thermal imaging cameras, which can detect temperature variations on surfaces.
Suggest one practical use for a thermal imaging camera when inspecting a house.
State one further application of infrared radiation, other than thermal imaging.
198 exam-style questions on CIE IGCSE Physics Electromagnetic spectrum, covering Electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.