A compound camera lens contains an element made from crown glass next to an element made from flint glass. Light of frequency 6.0 × 1014 Hz travels from the crown glass into the flint glass.
| Lens material | Speed of light in m/s\text{m/s}m/s |
|---|---|
| crown glass | 1.98 × 108 |
| flint glass | 1.80 × 108 |
Calculate how much shorter the wavelength is in the flint glass than in the crown glass.
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.