24 180 A sound source emitting a sound of frequency 945 Hz is moving away...
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Physics
24 180 A sound source emitting a sound of frequency 945 Hz is moving away from a man at rest towards a hill at a speed of 54 kmh The frequency of sound that the man hears in the echo reflected from the hill is Given speed of sound in air 330 ms 990 Hz 870 Hz 1320 Hz 850 Hz
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