<prompt> During normal conversation sound heard at 1meter distance is60 dB80 dB90 dB120 dB  <response>: 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. 