Question
Sun October 21, 2012 By:
 

The size of the image formed by a convex mirror of focal length 30 cm is a quarter of the size of a real object. Then the distance of the object from the mirror will be ??

Expert Reply
Sun October 21, 2012
Focal length = +30 cm
The distance between the object and the mirror (u) = ?
The distance between the image and the mirror (v) = ?
Let the size of the object be equal to 1.
Given size of the image = 1/4 size of the object.

ho = 1



But we know that















u = -90 cm

The distance of the object from the mirror = 90 cm
Home Work Help