Question

An object 3 cm high is placed at a distance of 9 cm in front of a concave mirror of focal length 18 cm find the position nature and size of the image formed

Answer 1

Answer:

behind the mirror, virtual and erect

Explanation:

1/v+1/u=1/f

1/v=1/f-1/u

1/v=1/-18+1/9

1/v=1-2/18

1/v=1/18

v=18

m=-v/u=size of image/size of object

-18/-9=size of image/3

2*3=size of image

6=size of image