Q.

The intensity of sound is 1.0 W/m2 . Find the intensity level in dB.

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a

140 dB

b

150 dB

c

120 dB

d

180 dB

answer is C.

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Detailed Solution

β=10logII0 =10log110−12 =10log1012 =10×12=120 dB
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The intensity of sound is 1.0 W/m2 . Find the intensity level in dB.