Question

When an object is placed at a distance of 60cm from a convex spherical mirror ,the magnification produced is 1/2 .Where should te object be placed to get a magnification of 1/3?

Answer 1

Hello,

 

 



 

Given that,

object distance u = –60 cm

then

 

⇒ V = 30 cm.

Now use mirror formula to find its focal length (f)



Again from question:-



Let object distance = –x



Then use mirror formula



Hence object distance = 120 cm