What is the intensity of sound in normal conversation
(a) 0-20 dB (b) 30-60 dB (c) 70-90 dB (d) 120-150 dB
Correct option(b) 30-60 dB
Explanation
The word noise is taken from the ***** word nausea and is defined as unwanted or unpleasant sound that causes discomfort.
Intensity of some noise sources is as follows:
