As our vocal cords become taut and thin, the frequency of sound produced (i) remains unchanged (ii) decreases (iii) increases (iv) decreases and then increases.
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our vocal cords become thin and taunt the frequency of sound produced iii)increases
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Answer:
option no.
three is correct increases
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Explanation:
When the muscles attached to vocal cords contract and stretch, the vocal cords become become tight and thin and a sound of high frequency is produced. when the muscles relax ,the vocal cords become loose and thick, and a sound of low frequency is produced. The vocal cords of a man are 20 mm long.
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