Question

There is an object in front of convex mirror at a distance of 5 cm. If its focal length is 10 cm, then 

a) what is the image distance? 

b) what is its magnification?

Answer 1

a) In the case of convex mirror,

Object distance = u = -5 cm ; Focal length = f = +10 cm 

Mirror formula

It is virtual image.

b) magnification = (m) = \(-\frac{v}{u}=\frac{-3.33}{-5}=0.66 .\)

It is erected image . The image is diminished by a factor of 0.66 .