A person standing on an open ground hears the sound of a jet aeroplane , coming from north at
Channel: Doubtnut
Date: 2020-01-03

A person standing on an open ground hears the sound of a jet aeroplane , coming from north at an angle `60^(@)` with ground level ,But he finds the aeroplane right vertically above his position , if V is the speed of sound , speed of the plane is :