Infrared radiation, radio waves, and ultraviolet radiation are all components of the electromagnetic spectrum.
Which statement about these waves is correct?
In a vacuum, radio waves travel faster than infrared radiation and have a longer wavelength.
In a vacuum, radio waves travel at the same speed as infrared radiation and have a longer wavelength.
In a vacuum, ultraviolet radiation travels faster than infrared radiation and has a shorter wavelength.
In a vacuum, ultraviolet radiation travels at the same speed as infrared radiation and has a longer wavelength.
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.