How is it possible to detect the filling of a bucket under a water tap – InterviewSolution

InterviewSolution

1.	How is it possible to detect the filling of a bucket under a water tap by hearing the sound standing at a distance ?
Answer» The SOUND BECOMES SHRILLER AND SHRILLER as the water in the bucket rises, the length of air column decreases. So the frequency of the sound produced INCREASES. Thus by hearing the sound from a distance, one can get the idea of water level in the bucket

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