Question

Define Magnification of a spherical mirror and write the formula.

Answer 1

magnification produced by spherical mirror is given by the ratio of size of a image and the size of an object.

magnification=size of a image / size of an object

m=h'/h = -v/u

NOTE : m is -ve for real image but +ve for virtual image

hence, magnification for convex mirror is always +ve while for concave mirror it depends upon the nature of the image.