The lens maker's equation is given by

Derive the Lens Makers equation OR Derive lens makers' equation. Why is it called so? Under which conditions focal length f and radii of curvature R are numerically equal for a lens?

Establish the lens maker's formula for a biconvex lens.

A lens of particular focal length is made from a given glass by adjusting radius of curvature. The formula applied in this case is lens maker's formula. Derive lens maker's formula considering refraction at a spherical surface

Write down the lens makers formula. Will there be change of focal length when immersed in water?