Math Chapter Wise Statics And Dynamics English MCQ RPSC PGT 2022 Q.Length of chord of curvature perpendicular to radius vector of curve p = f(r) is- A2f (r)/f '(r) B2 2 2 r [f (r)] f '(r) − C2r 2 1 [f (r)] f '(r) − D2 2 1 [f (r)] f '(r) − Show answer Correct answer: 2f (r)/f '(r)