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Question

Statement 1: Eardrum of a human vibrates to produce sound.

Statement 2: Cochlea start vibrating on receiving sound waves.

A
Only statement 1 is correct
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B
Only statement 2 is correct
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C
Both statements are correct
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D
Both statements are incorrect
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Solution

The correct option is D Both statements are incorrect
Sound is produced only when a body vibrates. In other words, each source of sound is a vibrating body.


  • An eardrum never vibrates on its own. Hence it cannot produce sound. Vocal cords actually vibrate and are responsible for the production of sound. If we put our fingers on our throat we can feel the vibrations of the vocal cords while speaking.
  • Eardrum is the thin stretched membrane at the end of the inner ear, which vibrates when a sound wave strikes it. Whereas a cochlea converts vibrations into electrical signals.
Hence, both statements are incorrect.

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