During normal conversation, sound heard at 1meter distance is
At a distance of 1 m, intensity of Whisper = 30 dB Normal conversation = 60 dB Shout = 90 dB Discomfo of the ear = 120 dB Pain in the ear = 130 dB Ref: Dhingra 7e pg 21.
60dB
80dB
90dB
120dB
Ear