Question

An object is placed 30 cm from a convex lens, a real image is formed 20 cm from the lens. Find the focal length of the lens​

Answer 1

Answer:

sory

sorry

sorry

Answer 2

Explanation:

u=-30cm

v=+20cm

1/f=1/v-1/u

1/f=1/20-1/-30

1/f=1/20+1/30

1/f= 5/60

f= 12cm

plz mark me as brain list i think you are also in class 10 . let be a friend s