Question

Explain the following term related to spherical lenses:- centres of curvature

Answer 1

Centre of Curvature:-

The centre of sphere of part of which a lens is formed is called the centre of curvature of the lens. Since concave and convex lenses are formed by the combination of two parts of spheres, therefore they have two centres of curvature. One centre of curvature is usually denoted by C1 and second is denoted by C2.