An adult man and a young child speak at the same sound level (volume). However, the child's voice sounds…

An adult man and a young child speak at the same sound level (volume). However, the child's voice sounds noticeably higher and sharper. Why?
  1. The child's vocal cords vibrate at a higher frequency
  2. The man's vocal cords produce waves of higher speed
  3. The child's vocal cords vibrate with greater amplitude
  4. The sound from the man travels slower in air

Solution

A higher frequency of vibration produces a sound of higher pitch, which makes a child's voice sound shrill or sharp.

Asked in: Homi Bhabha Practice

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