A siren emitting a sound of frequency 1000 vibrations per second is moving with a speed of 10 ms^(-1).What will be the frequency of sound, which a listener will hear when (i)the siren is moving towards him ? (ii)the siren is moving away from him ? Speed of sound in air =340 ms^(-1).

A siren emitting a sound of frequency 1000 vibrations per second is mo

1.	A siren emitting a sound of frequency 1000 vibrations per second is moving with a speed of 10 ms^(-1).What will be the frequency of sound, which a listener will hear when (i)the siren is moving towards him ? (ii)the siren is moving away from him ? Speed of sound in air =340 ms^(-1).
Answer» ANSWER :1033.3 HZ and 971.4 Hz