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At what level a sound becomes physical pain?

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in Energy Management by (679k points)
At what level a sound becomes physical pain?

(a) Above 50 dB

(b) Above 70 dB

(c) Above 80 dB

(d) Above 100 dB

I had been asked this question in unit test.

The origin of the question is Noise Pollution and its Effects topic in division Environmental Pollution of Energy Management

1 Answer

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Correct answer is (c) Above 80 dB

The explanation: Sound is measured in terms of decibels (db). World Health Organization prescribed optimum noise level as 45 db during day time and 35 db during night time. Anything above 80 db is hazardous.

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