On what factors does the frequency of sound depend in wind instruments?

The length of the air column.

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The breadth of the air column.

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The force with which the wind is blown.

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Amount of moisture in the air.

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Solution

The correct option is A The length of the air column.
In wind instruments, the frequency of the sound depends on the length of the air column. As the length of the air column decreases, the frequency increases. The breadth of the air column, amount of the moisture in the air and force with which air is blown do not alter the frequency.

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