An observer travelling with a constant velocity of `16.5 ms^(-1)`, passes closes to a stationary source of sound and notices that there is a change of frequency of 50 Hz as he passes the source. Calculate the frequency of the source. `("Speed of sound in air = 330 ms"^(-1)).`

An observer moves towards a stationary source of sound. The percentage change in the apparent frequency is

A source and a detector move away from each other, each with a speed of 10 ms^-1 with respect to the ground with no wind. If the detector detects a frequency 1950 Hz of the sound coming from the source, what is the original frequency of the source? Speed of sound in air =340 ms^-1 .

Calculate the beat frequency heard when two sound sources of wavelength 35cm and 35.2 cm are sounded together. The speed of sound in air is 330 ms^(-1)

An observer moves towards a stationary source of sound with a velocity one-fifth of the velocity of sound. What is the percentage increase in the apparent frequency?

A source of sound is travelling towards a stationary observer. The frequency of sound heard by the observer is 25% more that the actual frequency. If the speed of sound is v, that of the source is

A train moving at a speed of 220ms^-1 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 echo. The frequency of the echo as detected by the driver of the train is (speed of sound in air is 330ms^(-1) )

A train moving at a speed of 220ms^-1 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 echo. The frequency of the echo as detected by the driver of the train is (speed of sound in air is 330ms^(-1) )

A source and an observer is approaching closer with a relative velocity of 40 ms^(-1) . If the true frequency of the source is 1200 Hz calculate the observed frequency under these conditions: (i) the source alone is moving (ii) the observer alone is moving. Take velocity of sound in air to be 340 ms^(-1) .

A source of sound S is moving with a velocity of 50m//s towards a stationary observer. The observer measures the frequency of the source as 1000 Hz. What will be the apparent frequency of the source as 1000 Hz. What will be the apparent frequency of the source when it is moving away from the observer after crossing him? The velocity of the sound in the medium is 350m//s

A source of sound S is moving with a velocity of 50m//s towards a stationary observer. The observer measures the frequency of the source as 1000 Hz. What will be the apparent frequency of the source as 1000 Hz. What will be the apparent frequency of the source when it is moving away from the observer after crossing him? The velocity of the sound in the medium is 350m//s