Question

explain different concepts realted to leans​

Answer 1

A lens has two spherical surfaces, these two spherical surfaces form a part of a sphere. The centre of these spheres is known as the centre of curvature. The principal axis is an imaginary line passing through two centres of curvature and the pole. The area of the lens suitable for refraction is called Aperture.

Answer 2

Answer:

ye leans kya hota hai mujhe nahi pata