at a speec tected by d in air is 330 18 towards a stationary

Last updated: 6/12/2023

at a speec tected by d in air is 330 18 towards a stationary object emits a sound of frequency 1000 Hz Some of the sound reaching the object gets reflected back to the train as acha The frequency of of the train is 5000 Hz 3000 Hz 3500 Hz 4000 Hz