Question

what is relation between focal length and radius of curvaature​

Answer 1

The relation between focal length (f) and radius of curvature (R) of a spherical mirror is that the focal length is equal to half of the radius of curvature i.e. f=R2

Answer 2

Explanation:

Focal length (f) is the distance from mirror at which the light rays coming parallel from infinity meet.

Radius of Curvature R is the radius of the sphere of which the mirror is a part.

Focal length and radius of curvature are related as:

f=R/2

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