Question

A point object is placed inat 20cmdistance of 20 cm from a convex mirror of focal lenght 20 cm the images will formed at

Answer 1

Answer:

Convex mirror forms a diminished erect virtual image.

Object distance = - 20 cm.

Focal length = 20 cm.

Image distance = ?

1/v + 1/u = 1/f

1/v = 1/f - 1/u

= 1/20 -(-1/20)

= 1/20 + 1/20 = 2/20

1/v = 2/20

v = 20/2 = 10 cm.

Hence image forms behind the mirror 10 cm away from the pole.