See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

Equation of AD is 1 y 2at    2 2 3 1 t t x at 2    It passes though the focus.  3 2 1 1 1 1 1 t S t 5t S 0,     where 1 1 2 3 S t t t    Hence, the roots of 3 2 1 1 t S t 5t S 0     are 1 2 3 t , t , t .      3 2 1 1 1 2 3 t S t 5t S t t t t t t        Put t = 1. A B D C