Neural Control and Coordination Question 59
59. What is intensity of sound in normal conversation?
[2001]
(a) 10-20 decibel
(b) 30-60 decibel
(c) 70-90 decibel
(d) 120-150 decibel
Show Answer
Answer : b
Hints & Solutions
(b) The word noise is taken from the latin word nausea and is defined as unwanted or unpleasant sound that causes discomfort. Source Intensity (dB) Breathing $\quad 10$ Broadcasting studio 20 Trickling clock $\quad 30$ Library $30-35$ Normal conversation $35-60$ Telephone office Noise $60-80$ Alarm clock $\quad 70-80$ Traffic $\quad 50-90$ Motorcycle $\quad 105$ Jet fly over $\quad 100-110$ Train whistle $\quad 110$ Air craft $\quad 110-120$
