Question

find the radius of curvature of the spherical mirror whose focal length is of 11m. mention the nature of the mirror. give reason for your answer.

Answer 1

R = 2F = 2 x 1 = 2 meters or 200 cms.

 Here the mirror is convex and the reason for this is the focal length is positive.

For only convex mirrors the focal length will be positive whereas for the concave mirrors it is negative.