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/v1f=1u+1v

=> 1/v = 1/f - 1/u1v=1f1u

=> 1/v = 1/-15 - 1/-301v=115130 = -1/15 + 1/30115+130 = (-2+1)/302+130

=> 1/v = -1/301v=130
=> v = -30 cmv=30cm.

m = -v/u = -(-30)/-30 = -1m=vu=3030=1

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