2 DEC SS Q.44
- Option : C
- Explanation : Traffic noise is probably the most rigorous and pervasive type of noise pollution. It is one of the major environmental pollutants that are encountered in daily life and has direct effects on human performance. Noise levels are measured on the logarithmic scale with units of decibel (dB). The Average decibels (dB) of Heavy traffic, window air conditioner, noisy restaurant, power lawn mower are 80-89 dB. The sounds above 85 dB are very harmful.
