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)`.

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) )

The ratio of the apparent frequencies of a car when approaching and receding a stationary observer is 11:9 What is the speed of the car, if the velocity of sound in air is 330 m/s?

A motor car is approaching towards a crossing with a velocity of 75 kmh^(-1) .The frequency of sound of its horn as heard by a policeman standing on the crossing is 260 Hz.What is the real frequency of the horn ? Speed of sound = 332 ms^(-1) .

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 source producing sound of frequency 340 Hz is moving away from a stationary observer with a velocity of 34 ms^(-1) . The apparent change in wavelength of sound heard by the observer is (V = 340 ms^(-1))

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 train A is travelling at a speed of 108 km hr^(-1) The train approaches another train B standing on the platform.The engine of the train B below its horn. The frequency of the horn as observed by the driver in train A is 504 Hz. The frequency of the horn of train B is (speed of sound = 330 ms ^(-1)

The apparent frequency of the whistle of an engine changes in the ratio 9 : 5 as the engine passes the stationary observer. If the velocity of sound is 350 ms^(-1) , then the speed of the engine is

A motor car is approaching towards a crossing with a velocity of 72 " km h"^(-1) . The frequency of the sound of its horn as heard by a policeman standing on the crossing is 260 Hz. The frequency of horn is