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Question

A two-fold increase in intensity of a wave implies an increase of (Given: log102=0.3010)

A
2 dB
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B
10 dB
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C
3.01 dB
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D
0.5 dB
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Solution

The correct option is C 3.01 dB
L=10 log10II0 dB
L=10 log102II0 dB
LL=10[log102II0log10II0]
ΔL=10 log102=10×0.3010=3.01 dB

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