Q.12 The loudness of a sound that a person can withstand without discomfort
is about
1. 150 dB
2. 215 dB
3. 30 dB
4. 80 dB
Ans. (d) 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 the noise level above 80 dB is painful and gradually leads to permanent loss of hearing ability or deafness.
The permissible sound level in different areas is shown in the following table
© 2024 GoodEd Technologies Pvt. Ltd.
