Today's Devotional

Paid in Full
Have you received the freedom God has provided through the blood of His Son?

read more

Class 10,Science,Refraction By Spherical Lenses

Lenses are the most used things in optical devices like microscopes and telescopes. Bi-convex and bi-concave lenses are the most popular ones in use among school labs. Lenses use the phenomenon of refraction of light to form images.

The geometric centre of a lens is called its optic centre. The line passing through the optic centre and perpendicular to the plane of the lens is the principal axis. A light ray incident on a lens, after refraction appears to emanate from the principal focus in the case of a concave lens and passes through the focus in the case of a convex lens.

Related Videos