Q.

Intensity level of a sound of intensity I is 30 dB. The ratio II0 is (Where I0 is the threshold of hearing)

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a

3000

b

1000

c

300

d

30

answer is B.

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Detailed Solution

L=10 log10II0=30⇒II0=103
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Intensity level of a sound of intensity I is 30 dB. The ratio II0 is (Where I0 is the threshold of hearing)