Question

A point source of a light is placed in front of a convex lens, such that a divergent beam starting from it,on passing through the lens is parallel to the principal axis. The point of source of light is situated at the:
(a) First principal focus of lens
(b) Second principal focus of lens
(c) Optical centre of lens
(d) None of the above​

Answer 1

Answer:

Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a transparent glass which is bounded by two spherical surfaces. The light rays are refracted after passing through the lens. It is of two types, convex lens and concave lens.

Answer 2

Answer:

optical centre of lens ....plz make my answer as the brainiest answer.... follow me for follow back