An object is placed at a distance of 30 cm in front of a convex mirror of focal length 15 cm .find the nature and position of image ?

1 Answer
Feb 18, 2018

The image is real , inverted and of same size as that of object
Image formed at 30cm the same side of object

Explanation:

u = -30 cm
f = -15 cm

1/f = 1/u + 1/v

=> 1/v = 1/f - 1/u

=> 1/v = 1/-15 - 1/-30 = -1/15 + 1/30 = (-2+1)/30

=> 1/v = -1/30
=> v = -30 cm.

m = -v/u = -(-30)/-30 = -1

therefore ,
The image is real , inverted and of same size as that of object