We find it difficult to hear if we put cotton in our ears. This is because

cotton damps the sound wave before reaching the ear drum

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cotton creates a vacuum in the ear

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cotton conducts the vibration to the ear drum

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none of the above is true

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Solution

The correct option is B cotton damps the sound wave before reaching the ear drum
Cotton act as a sound absorber so when we put it inside the ear, damps the vibration entering the ear. and when the damped sound reaches the eardrum, its vibration becomes lower than the original. So, we find it difficult to hear.

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Similar questions

Q. When less sound vibrations reach our ears, we perceive it as a shrill sound.

Sound is produced by vibration. To detect sound, some part of our ear should also vibrate when sound strikes it. Which part of the ear is this and how does it help us in hearing the sound?

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Q. We have two ears because:
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