A ray of infrared radiation is transmitted from a transparent ceramic into silicone oil. The ray meets the boundary at an angle to the normal.
| Quantity | Value |
|---|---|
| Speed in the transparent ceramic | 1.8 × 108 m/s |
| Frequency in the silicone oil | 1.5 × 1014 Hz |
| Wavelength in the silicone oil | 1.4 × 10-6 m |
The equation linking wave speed, frequency and wavelength is:
v=fλv = f\lambdav=fλ
Calculate the speed of the infrared radiation in the silicone oil.
Explain how the direction of the ray changes as it enters the silicone oil.
93 exam-style questions on AQA GCSE Physics 6.2 Electromagnetic waves, covering 6.2.1 Types of electromagnetic waves, 6.2.2 Properties of electromagnetic waves 1, 6.2.3 Properties of electromagnetic waves 2, 6.2.4 Uses and applications of electromagnetic waves, 6.2.5 Lenses, and 6.2.6 Visible light. Each one has a worked solution and a mark scheme showing where the marks go.