A radio station broadcasts radio waves with a frequency of 100 MHz.
The speed of radio waves in air is 3.0 × 108 m/s.
State the equation linking wave speed, frequency and wavelength.
Calculate the wavelength of the radio waves.
A mobile phone uses microwaves.
State one way in which microwaves are the same as radio waves.
Microwaves have a shorter wavelength than radio waves.
State how the frequency of microwaves compares with the frequency of radio waves.
84 exam-style questions on Edexcel GCSE Physics 5.2 The electromagnetic spectrum, covering 5.2.1 Electromagnetic waves and refraction in glass (core practical), 5.2.2 Groups of the electromagnetic spectrum, 5.2.3 Wavelength-dependent behaviour of EM waves, and 5.2.4 Velocities of EM waves in different substances. Each one has a worked solution and a mark scheme showing where the marks go.