State the correct relation between the focal length and the radius of curvature of a…

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

State the correct relation between the focal length

f

and the radius of curvature

R

of a spherical mirror. (a)

f = 2R

(b)

f = \dfrac{R}{2}

(c)

f = -\dfrac{R}{2}

(d)

f = R