Question

According to WHO (World Health Organisation), what is the loudness limit of sound in industries?

• A. $50dB$
• B. $75dB$
• C. $100dB$
• D. $80dB$

Answer 1

Answer: (B)

$75dB$

The decibel scale is used to indicate levels of sound , that is , loudness or intensity of sound.

According to WHO. In industrial areas, the permissible limit is $75$ $dB$ for daytime and $70$ $dB$ at night to prevent noise pollution.