A convex lens has focal length +20cm, it's power is..........
(a)+5D (b)-5D (c)+0.05D (d)100D
Answers
Answered by
4
heya...
Power of the lens is Diopters (D) is the reciprocal of focal length in meters.
So power=1/.2=5D. PLEASE MARK ME AS BRAINLIST AND FOLLOW ME PLEASE
Power of the lens is Diopters (D) is the reciprocal of focal length in meters.
So power=1/.2=5D. PLEASE MARK ME AS BRAINLIST AND FOLLOW ME PLEASE
abhinash49:
wrong......
Answered by
7
hey mate here is your answer
focal length=20cm=0.2m
power=1/focal length
= 1/0.2
=5Dioptre
hope it will help you
mark me brainliest ✌✌✌
focal length=20cm=0.2m
power=1/focal length
= 1/0.2
=5Dioptre
hope it will help you
mark me brainliest ✌✌✌
Its wrong
hey mate its correct
Similar questions