Question

The relation between radius of curvature R and focal length 'f of a curved mirror is f = 2R .​

Answer 1

Answer:

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

Explanation:

Answer 2

The statement is false. Relation between focal length and radius of curvature is $R=2f$.

Explanation:

• Curved mirrors are apertures cut out from a sphere which has either its inner surface or its outer surface polished.
• There are two types of curved mirrors: Concave mirror and convex mirror.
• Concave mirror is called converging mirror and convex mirror is called diverging mirror.
• Radius of curvature $R$ of  is the radius of the polished sphere.
• Focal length $f$ of curved mirror is the point where all the light rays converge or diverge.
• Rays coming from object kept at infinity produces an image at focus of the mirror.
• Focal length is half the length of radius of curvature.
• $R=2f$