Compare the sound of a baby with the sound of a man. Even if both have the same loudness, how they differ. Explain the factor which causes the difference.

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Solution

Frequency of the voice of a child is higher than that of an adult. The frequency determines the shrillness or pitch of a sound. If the frequency of vibration is higher we say that the sound is shrill and has a higher pitch. If the frequency of vibration is lower, we say that the sound has a lower pitch.

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Figure

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