JEE Main 22 Jan 2025 Shift 1 Paper

A bob of mass m is suspended at a point O by a light string of length I and left to perform vertical motion (circular) as shown in figure. Initially, by applying horizontal velocity v0 at the point ' A ', the string becomes slack when, the bob reaches at the point ' D '. The ratio of the kinetic energy of the bob at the point B and C is ______