Edexcel IGCSE Physics 3.16 Ray diagrams
Practise completing ray diagrams for mirrors, blocks and prisms, including normals, refraction paths, wavefronts and crossing rays.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Practise completing ray diagrams for mirrors, blocks and prisms, including normals, refraction paths, wavefronts and crossing rays.
This question is about refraction.
The diagram shows a ray of light from a torch incident on the surface of a pool of water.

The angle of refraction of the ray of light is 33∘
Draw the path of the ray of light in the water.
straight ray bent towards normal at the air-water boundary;
correct angle of refraction by eye;
judge straightness of ray by eye