JEE Main 202124 Feb, Morning shiftPhysicsEasyOptics190× since 2002The focal length f is related to the radius of curvature r of the spherical convex mirror by :AOption A. f = rBOption B. f = −-− rCOption C. f = +12{{1 \over 2}}21 rDOption D. f = −-−12{{1 \over 2}}21 rCheckSkip · show solution