First slide
Ray optics

A ray of light falls on the surface of a spherical paper weight making an angle α  with the normal and is refracted in the medium at an angle β .  The angle of deviation of the emergent ray from the direction of the incident ray is


Sum of the interior angle = exterior angle
total deviation=α-β+α-β=2α-β

Get Instant Solutions
When in doubt download our app. Now available Google Play Store- Doubts App
Download Now
Doubts App