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

Explanation

Relative loudness of sound ranges from 30 dB -60 dB and is generally not hazardous. The loudness above 60 -80 dB , is not much uncomfortable while prolonged exposure to noise level above 80 dB is painful and gradually leads to permanent loss hearing ability or deafness. The premissible sound level in different areas is shown in the following table
`{:(,"Day","Night"),("Industrial",75dB,70dB),("Commercial",65dB,55dB),("Residential",55dB,45dB),("Silent",50dB,40dB):}`