The longer the length of a vibrating air column, the ________ the pitch of the sound produced.

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Solution

In wind instruments, the sound is produced by the vibration in the air column e.g. flute, shehnai, etc.
The frequency of the sound produced varies with the length of the air column.
A short air column produces high-frequency sound and a long air column produces low-frequency sound.
Therefore, the longer the length of a vibrating air column, the smaller the pitch of the sound produced.

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