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Class 11 NEET Physics Waves Questions Questions

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Question : 33

Total: 91

A train moving at a speed of 220ms−1 towards a stationary object, emits a sound of frequency 1000 Hz. Some of the sound reaching the object gets reflected back to the train as echo. The frequency of the echo as detected by the driver of the train is (Speed of sound in air is 330ms−1)

(2012 Mains)

3500 Hz
4000 Hz
5000 Hz
3000 Hz

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