For a spherical refracting surface define:

a. Pole  

b. Centre of curvature

c. Principle axis

Asked by Topperlearning User | 21st May, 2014, 01:45: PM

Expert Answer:

a. Pole : Pole of a spherical refracting surface is the centre of the surface.

b. Centre of curvature: Centre of curvature of a refracting surface is the centre of the sphere of which this surface is a part.

c.Principle axis: The line passing through the pole and centre of curvature of spherical refracting surface, extended on either side is called the principle axis of the surface.

Answered by  | 21st May, 2014, 03:45: PM