In the absence of air source and observer moves away 20 m/s. The frequency observed by the observer is 1800 Hz and velocity of sound in air is 340 m/s then find original frequency of source

A sound source moving with speed 50 m/s along x-axis and observer at rest on y-axis.If the frequency observed by observer when source crosses the origin is 96 Hz, then the original frequency of source is :(speed of sound is given medium is 200 m/s)

A listener is at rest and a police siren is moving away from the listerner at 60m/s. what frequency does the listerner hear given that the velocity of sound in air is 340m/s and frequency os siren is 500Hz?

A source of sound is moving towards a high wall with a speed of 20 m/s. The frequency of the sound produced by the source is 400 Hz. If the speed of the sound is 340 m/s, then the beat frequency heard by a person standing near the wall will be

An observer moves towards a stationary source of sound of frequency n . The apparent frequency heard by him is 2 n . If the velocity of sound in air is 332 m/sec, then the velocity of the observer is

A source of sound, producing a sinusoidal wave, is moving uniformly towards an observer at a velocity of 20 m/s. The observer is moving away from the source at a constant velocity of 10 m / s. Frequency of the source is 200 Hz and speed of sound in air is of 340 m/s. (a) How many times, in an interval of 10 second, the eardrums of the observer will sense maximum change in pressure? (b) What will be apparent wavelength of sound for the observer?

An observer is moving away from source of sound of frequency 100 Hz. His speed is 33 m/s. If speed of sound is 330 m/s, then the observed frequency is