Question

A concave mirror of focal length 15cm forms an image of an object kept at a distance of 10 cm from the mirror. Find the position, nature and size of the image formed by it.

Answer 1

Answer:

The image is formed 30cm behind the mirror

The image is virtual

Explanation:

Mirror formula 1/f=1/u+1/v

1/15=1/10+1/v

1/v=1/15-1/10

1/v=-1/30

v=-30cm

I can’t find size of image without size of object but the formula of getting it is

hi/ho=v/u