A ray of light falls on the surface of a spherical glass paperweight 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

Question

A ray of light falls on the surface of a spherical glass paperweight 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

Toppr Admin · Accepted Answer

A ray of light falls on the surface of a spherical glass paperweight making an angle a with the normal and is refracted in the medium at angle b. The angle of deviation of the emergent ray from the direction of incident ray is :a−b2(a−b)(a−b)2b−a