Question

If R is the radius of curvature of a spherical mirror and f is its focal length, then:

(a) R = `f`
(b) R =` 2f`
(c) R = `f/2`
(d) R = `3f`

Answer 1

R = 2f

If R is radius of curvature of a spherical mirror and f is its focal length, then R=2f