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Question

What is the frequency of the sound produced when the vocal cords are : (a) tight and thin  (b) loose and thick?


Solution

(a) When the muscles attached to vocal cords contract and stretch, the vocal cords become tight and thin and a sound of high frequency is produced.
(b) When the muscles relax, the vocal cords become loose and thick, and a sound of low frequency is produced. 


Physics
Science for Eighth Class
Standard VIII

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