Question

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm.

Find the position and nature of the image formed.​

Answer 1

Explanation:

It is to be remembered that a convex mirror always forms the virtual, erect and diminished image.

Given: Object distance, u=−10cm     Focal length, f=15cm

To find: Image distance, v

From mirror formula :

v1+u1=f1

v1−101=151

v1=151+101=15025

v=6cm

Hence image will be formed 6 cm beyond the mirror, i.e virtual magnification

m=u−v=−10−6=0.6

Hence it will be erect and diminis