A rocket is moving at a speed of `200ms^(-1)` towards a stationary target. While
Channel: Doubtnut
Date: 2020-08-02

A rocket is moving at a speed of `200ms^(-1)` towards a stationary target. While moving, it emits a wave of frequency 1000hz. Some of the sound reaching the target gets reflected back to the racket as an echo. Calculate the frequency of sound as detected by the person at the position of tartget and frequecny of echo as detected by the rocket . Given velocity of soun `=330ms^(-1)`.