The following diagram shows how light is reflected in a mirror. The image is virtual, upright and the same size as the object. Scroll down the page for more examples and solutions.

Describe how waves can be reflected, absorbed or transmitted at the boundary between two different materials.

How to construct ray diagram to illustrate the reflection of a wave at a surface.

What is meant by refraction?

Explain how refraction is due to changes in the speed of waves as they change from one medium to another?

Construct ray diagrams to show refraction of a wave.

Use wavefront diagrams to explain refraction in terms of changes of speed.

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