A student measures the angle of refraction for different angles of incidence as light enters a glass block from air.
Table
| Angle of incidence (∘^\circ∘) | Angle of refraction (∘^\circ∘) |
|---|---|
| 0 | 0 |
| 20 | 13 |
| 40 | 25 |
| 60 | 35 |
Which conclusion is correct?
The angle of refraction is directly proportional to the angle of incidence
The angle of refraction is smaller than the angle of incidence above 0∘0^\circ0∘
The angle of refraction increases at an increasing rate as incidence increases
The light bends away from the normal for every angle of incidence above 0∘0^\circ0∘
51 exam-style questions on OCR GCSE Physics 5.3 Wave interactions, covering 5.3.1 Wavelength and how substances affect waves, 5.3.2 Wave velocity in different substances, 5.3.3 Convex and concave lenses, 5.3.4 Ray diagrams for reflection and refraction, and 5.3.5 Colour, absorption and reflection. Each one has a worked solution and a mark scheme showing where the marks go.