What is the intensity of sound in normal conversation?

10-20 dB

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40-60 dB

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90-120 dB

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120-150 dB

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Solution

The correct option is B 40-60 dB
The intensity of sound in normal conversation is 40-60 dB. When the sound exceeds its upper limit it creates high-frequency vibrations in the tympanic membrane and it ruptures, which may lead to deafness.
So, the correct answer is option B.

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