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When is sound loud

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When is sound loud

    • Posted by Aditya Prakash 8 years, 3 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Amar Kumar 8 years, 3 months ago

    Noise levels are measured in decibels, known as dB. Loud noises have high decibel levels. You can listen to sounds at levels from 0-70 dB for as long as you want. Sounds louder than 85 dB may cause damage if you listen for 8 hours or more. Researchers have found that people who are exposed over long periods of time to noise levels at 85 decibels or higher are at a much greater risk for hearing loss.

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