Question

Intensity level of whispering noise is

• A. $10-15$ dB
• B. $20-40$ dB
• C. $40-50$ dB
• D. $50-55$ dB

Answer 1

Answer: (B)

$20-40$ dB

The softest sound that a human ear can hear is of 0 dB which is almost inaudible. Exposure of sound over 140 dB is harmful to human ears.

Whispering means saying something very quietly. The intensity for whispering from about five feet away is 10 dB and the intensity for whispering nearby is about 30 dB. So, the intensity level of whispering noise ranges from 20 - 40 dB.

So, the correct answer is '20 - 40 dB'.