Question

Explain mirror formula

Answer 1

Mirror formula is the relationship between object distance (u), image distance (v) and focal length. Mirror formula for concave Mirror = 1/f = 1/v + 1/u.

Answer 2

The mirror formula is the mathematical relation between the object distance (u), image distance (v) and focal length (f) of a spherical mirror. This relation is written as :

1 /v+1 /u = 1 /f

This formula is valid for all kinds of spherical mirrors, for all positions of the object. Although one needs to be careful about the values, one puts for u, v and f with appropriate sign according to the sign convention.

Hope it helps :)