A train approaching a platform at a speed of `54 km h^-1` sounds a whistle. An observer on the platform finds its frequency to be 1620 Hz. The train passes the platform keeping the whistle on and without slowing down. What frequency will the observer hear after the train has crossed the platfrom ? The speed of sound in air `= 332 ms^-1`

A sound detector is placed on a railway platform. A train, approaching the platform at a speed of 36 kmh^-1 , sounds its whistle. The detector detects 12.0 kHz is the most dominant frequency in the whistle. If the train stops at the platform and sounds the whistle, what would be the most dominant frequency detected? The speed of sound in air is 340 ms^1 .

A sound detector is placed on a railway platform. A train, approaching the platform at a speed of 36 kmh^-1 , sounds its whistle. The detector detects 12.0 kHz is the most dominant frequency in the whistle. If the train stops at the platform and sounds the whistle, what would be the most dominant frequency detected? The speed of sound in air is 340 ms^-1 .

A sound detector is placed on a railway platform. A train, approaching the platform at a speed of 36 kmh^-1 , sounds irts whistle. The detector detects 12.0 kHz s the most dominant frequency in the whistle. If the trasin stops at the platform and sounds the whistle, what would be the most dominant frequency detected? The speed of sound in air is 340 ms^1 .

A train is approaching towards a platform with a speed of 10 m s^(-1) while blowing a whistle of frequency 340 Hz. What is the frequency of whistle heard by a stationary observer on the platform ? Given speed of sound = 340 ms^(-1) .

A train approaching a crossing at a speed of 100 km/h sounds a whistle 400 Hz when it is 1.5 km from the crossing. There is no wind and the speed of sound in air is 340 m/s. What frequency is heard by an observer 1.0 km on the strainght road from the crossing at right angles.

A locomotive approaching a crossing at a speed of 20 ms^(-1) sounds a whistle of frequency 640 Hz when 1 km from the crossing. There is no wind and the speed of sound in air is 330 ms^(-1) . What frequency is heard by an observer sqrt(3) km on the straight road from the crossing at right angle :-

A locomotive approaching a crossing at a speed of 20 ms^(-1) sounds a whistle of frequency 640 Hz when 1 km from the crossing. There is no wind and the speed of sound in air is 330 ms^(-1) . What frequency is heard by an observer sqrt(3) km on the straight road from the crossing at right angle :-

A train is approaching towards a platform with a speed of 10 ms^(-1) , while blowing a whistle of frequency 340 Hz. What is the frequency of whistle heard by a stationary observer on the platform ? (given, speed of sound =340 ms^(-1) )