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Question
Biology
The intensity levels of whispering noise is
Q. The intensity levels of whispering noise is
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WBJEE
WBJEE 2009
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A
10-15 dB
25%
B
20-40 dB
27%
C
45-50 dB
35%
D
50-55 dB
13%
Solution:
The strength of sensation of sound perceived by the individual is called loudness, which is measured in decibels (dB). The level of audible sound is about 10 dB and of whisper is 10-15 dB and sometimes upto 20 decibel.