Question

Find the position, nature and size of the image of an object 3 cm high placed at a distance of 9 cm from a converging mirror of focal length 18 cm. Draw the ray diagram for the image formation.

Answer 1

Answer:

u=-9, f=-18

1/v+1/u=1/f

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

v=18

positive sign shows that the image is virtual and behind the mirror.

height of the image/height of the object=v/u

height of the image =(18/9)×3=6cm