A source of sound of frequency `1.8kHz` moves uniformly along a straight line at a distance `250m`
Channel: Doubtnut
Date: 2020-01-26

A source of sound of frequency `1.8kHz` moves uniformly along a straight line at a distance `250m` from observer. The velocity of source is `0.8C` where `C` is the velocity of sound. Find out the frequency of sound received by observer (in kHz) at the moment when the source gets closest to him.