A rocket is moving at a speed of `200ms^(-1)` towards a stationary target. While moving, it emits a wave of frequency 1000 Hz. 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 target and frequency of echo as detected by the rocket . Given velocity of sound `=330ms^(-1)`.

Answer

2500 Hz

Explanation

`v.=v((v+v_0)/(v))`,v=1500 Hz .