A train standing at the outer signal of a railway station blows a whistle of frequency 400 Hz in still air .The train begins to move with a speed of `10ms^(-1)` towards the platform. What is the frequency of the sound for an observer standing on the platform?(sound velocity in air = `(330ms^(-1))`)

A train,standing at the outersignal of a railway station blows a whistle of frequency 400 Hz in still air. What is the frequency of the whistle for a platform observer when the train approaches the platform with a speed of 10 m s^-1

A train,standing at the outersignal of a railway station blows a whistle of frequency 400 Hz in still air. What is the frequency of the whistle for a platform observer when the train. recedes from the platform with a speed of 10 m s^-1 ?

A train, standing in a station-yard, blows a whistle of frequency 400 Hz in still air. The wind starts blowing in the direction from the yard to the station with a speed of 10 m s^-1 . What are the frequency, wavelength, and speed of sound for an observer standing on the station’s platform? Is the situation exactly identical to the case when the air is still and the observer runstowards the yard at a speed of 10 m s^-1 ? The speed of sound in still air can be taken as 340 m s ^-1 .

.A train,standing at the outersignal of a railway station blows a whistle of frequency 400 Hz in still air. What is the frequency and speed of sound in each case ? (a) approaches the platform with a speed of 10ms^(-1) , (b) receeds from the platform with a speed of 10ms^(-1)? (ii) The speed of sound in still air can be taken as 340ms^(-1)

A SONAR system fixed in a submarine operates at a frequency 40.0 kHz. An enemy submarine moves towards the SONAR with a speed of 360 kmh^(-1) .What is the frequency of sound reflected by the submarine? Take the speed of sound in water to be 1450 ms^(-1) .

A sound wave travels at a speed of 339 ms^-1 . If its wavelength is 1.5 cm, what is the frequency of the wave ? Will it be audible ?

A SONAR system fixed in a submarine operates at a frequency 40.0 kHz. An enemy submarine moves towards the SONAR with a speed of 360 km h^-1 . What is the frequency of sound reflected by the submarine ?Take the speed of sound in water to be 1450m s^-1 .

A train whistling at constant frequency is moving towards a station at a constant speed V. The train goes past a stationary observer on the station. The frequency n' of the sound as heard by the observer is plotted as a function of time t (shown in the figure). Identical the expected curve.