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29/01/2022 8:03 pm
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The loudness of a sound that a person can withstand without discomfort is about
(a) 150 dB
(b) 215 dB
(c) 30 dB
(d) 80 dB
1 Answer
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29/01/2022 8:04 pm
Correct answer: (d) 80 dB
Explanation:
Green muffler is related to pollution of noise. Noise pollution is measured in decibels (dB). Intensity level of whispering sound is 20-40 dB. Intensity of sound in normal conservation 30-60 dB. Day time sound level in silent zone is 50 dB. Noise become uncomfortable above 80 dB. Sound become hazardous noise pollution at level above 80 dB.