Question

When you fill water in a bottle or a bucket, the pitch of sound produced by the falling water becomes shriller as the water level rises. WHY? ​

Answer 1

Answer:

As the bottle fills up, the air column or amount of air inside the bottle decreases. So as a result, the pitch or shrillness of the sound will increase, as frequency or pitch of sound is inversely proportional to the length of vibrating air column.

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