Question

a 5 cm tall object is placed at a distance of 30 cm from a convex mirror of focal length *20* cm. find the position, size and nature of the image formed.

Answer 1

Answer:

at 12 cm, a 2cm size virtual image is formed

Explanation:

1/f = 1/v-1/u

1/20 = 1/v - 1/30

=>v = 12

size is proportional to the distance

so, 5/size = 30/12

=> size = 2 cm