The change in direction of a beam of light as it travels from one material to another is called refraction. The normal is a construction line drawn at right angles to the surface of the glass block.

To investigate the reflection of light by different types of surface, and the refraction of light by different substances. Remove the block. Join the crosses to show the paths of the light rays ...

Light - Reflection and Refraction. All the class 10 Science NCERT solutions have been collated in PDF format which students may easily download free of cost. Read more: Refraction of Light ...