Question

If the radius of curvature of a convex mirror is 3.0m what would be its focal length?

Answer 1

radius of curvature=2focal length

so 3=2f

f=1.5m

Answer 2

Radius of curvature is double of focal length (for parabolic mirrors and paraxial rays) so if u are asking for it ,then it would be 1.5m otherwise it can't be determined for marginal rays