The loudness of a sound that a person can withstand without discomfort is about

Options

A. 150 dB
B. 215 dB
C. 30 dB
D. 80 dB

Answer

D

Explanation

Green muffler is related to pollution of noise. Noise is measured in decibel. Intensity level of sound is dB 20 −40 dB .Intensity of sound in normal conservation of dB 30 − 60dB. Day time sound level in silent zone is 50 dB .Noise becomes uncomfortable above 80 dB