Question

If the focal length is 20 cm what is radius of curvature

Answer 1

HEY MATE!

HERE IS YOUR ANSWER:

FOCAL LENGTH = RADIUS OF CURVATURE/2

SO , 20=RADIUS OF CURVATURE/2

40 cm=RADIUS OF CURVATURE

HOPE IT HELPED ^_^

Answer 2

Hlw here is ur ans.......