A policeman blows a whistle with a frequency of 500 Hz.A car approaches him with a velocity of `15 ms^(-1)`.Calculate the change in frequency as heard by the driver of the car as he passes the policeman.Speed of sound in air is `300 ms^(-1)`.

A policeman blos a whistle of frequency 400Hz as a car speeds past him with a velocity of 54km h^(-1) . Find the cahnge in frequency as heard by the driver of the car just as he passes the policeman. Velocity of sound in air is 350ms^(-1)

A policemen blows a whistle of frequency 330 Hz as a car speeds and passed him with avelocity 18 km per hour. Find the change in frequency as heard by the driver of the car just as he passes the police man (Velocity of sound = 320 m//s)

A car has two horns having a difference in frequency of 180 Hz. The car is approaching a stationary observer with a speed of 60 ms^(-1) . Calculate the difference in frequencies of the notes as heard by the observer, If velocity of sound in air is 330 ms^(-1) .

A traffic policeman standing on a road sounds a whistle emitting the main frequency of 2.00 kHz. What could be the apparent frequency heard by a scooter driver approaching the policeman at a speed of 36.0km h^(-1) ? Speed of sound in air =340 m s^(-1).

A source producing sound of frequency 170 Hz is approaching a stationary observer with a velocity 17 ms^(-1) . The apparent change in the wavelength of sound heard by the observer is (speed of sound in air = 340 ms^(-1) )

A person standing on one side of a road blows a whistle which has a frequency of 600 Hz . A cyclist passes at 16 kilometre per hour. What does the frequency of the whistle appear to be to the cyclist before and after passing ? (Velocity of sound in air = 350 ms^(-1) )

An engine blowing a whistle of frequency 133 Hz moves with a velocity of 60(m)/(s) towards a hiss from which an echo is heard. Calculate the frequency of the echo heard by the driver. (velocity of sound in air in 340(m)/(s) .)

A man is travelling in a train towards the station with a speed of 50 m/s. calculate the apparent frequency heard by him of whistle which is blown at the station with a frequency 200 Hz. Velocity of sound in air is 350 m/s.

Calculate the apparent frequency of the horn of a car approaching a stationary listener with a velocity of 12 ms^(-1) . The frequency of horn is 500 Hz.The speed of sound is 332 ms^(-1) .