d The frequency of sound as heard by the observ standing on

Last updated: 6/9/2023

d The frequency of sound as heard by the observ standing on the platform will decrease 5 A rocket is moving at a speed of 220 m s towards a stationary target emits a sound of frequency 1000 Hz Some of the sound reaching the target gets reflected back to the rocket as an echo The frequency of the echo as detected by the rocket is Take velocity of sound 330 m s a 3500 Hz b 4000 Hz c 5000 Hz d 3000 Hz