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 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

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

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)

A car moving at 108 km h^-1 finds another car in front of it going in the same direction at 72 km h^-1 . The first car sounds a horn that has a dominant frequency of 800 Hz. What will be the apparent frequency heard by the driver in the front car ? Speed of sound in air = 330 ms^-1

A car moving at 108 km h^-1 finds another car in front of it going in the same direction at 72 km h^-1 . The first car sounds a horn that has a dominant frequency of 800 Hz. What will be the apparent frequency heard by the driver in the front car ? Speed of sound in air = 330 ms^-1

A car B, with a hom of frequency 700 Hz moves with a velocity 90 kmh^(-1). It approaches another car A, coming towards it with a velocity 72 kmh^(-1). Calculate the apparent frequency of the sound heard by the driver in the car A (a) before crossing (b) after crossing ? Velocity of sound =350 ms^(-1) .

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 car sounding its horn at 480Hz moves towards a high wall at a speed of 20ms^(-1) , the frequency of the reflected sound heard by the man sitting in the car will be nearest to , (speed of sound =330m//s)

A car with a horn of frequency 620 Hz travels towards a large wall at a speed of 20 ms^(-1) the frequency of echo of sound as heard by the driver is x xx10^2Hz , what is the value of x (velocity of sound -330m/s