Q.8.
What is the correct reason for the difference in the voices of human male,
female and children?
a. Number of vocal chords are different.
b. The length of vocal chords is different.
c. The efficiency of muscles connected to the vocal chords is different.
d. The efficiency of vocal chords depends upon the sex and age.
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The vocal cord of a child is very small. Frequency of the voice depends upon the length of the vocal cord. Shorter the vocal cord, more is the frequency and hence more shrill is the voice. Due to the difference in length of vocal cords, the sounds produced by the three is different.
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