Edexcel IGCSE Physics 3.14 Light waves
Practise describing light as a transverse wave that reflects and refracts, with changes in speed, wavelength and direction at boundaries.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- describe a ray bending towards the normal as light enters a denser medium
- explain refraction as a change in speed, wavelength or direction when medium changes
- link reduced wave speed in water to shorter wavelength while frequency stays constant
3.14 Light waves question 1
This question is about light.
Diagram 1 shows a light ray entering a glass prism.
Diagram 1
Describe what happens to the light ray when it enters the prism at point A .
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