Question

object distance (u)=30cm , focal length (f)=20cm find the image distance


plz frnds no spam plzzzz my humble request yar​

Answer 1

Answer: 60cm IS THE ANSWER

Explanation:

1/f=1/v+1/u

==>1/v=1/f-1/u=1/20-1/30=1/60

==>v=60cm

HOPE IT HELPS YOU............

THANK YOU.