The Table shows information about infrared and ultraviolet waves travelling through space.
Table
| Type of wave | Frequency in Hz\text{Hz}Hz | Wavelength in m\text{m}m |
|---|---|---|
| infrared | 3.0 × 1013 | 1.0 × 10-5 |
| ultraviolet | 1.5 × 1015 |
Show that the speed of the infrared waves is about 3 × 108 m/s.
Calculate the wavelength of the ultraviolet waves.
The Sun emits infrared and ultraviolet at the same moment.
Explain whether the ultraviolet reaches the Earth before, after or at the same time as the infrared.
Describe how the Table shows that frequency and wavelength are related for electromagnetic 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.