The ratio of intensities between two coherent sound sources is \( 4...

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The ratio of intensities between two coherent sound sources is \( 4: 1 \). The difference of loudness in \( \mathrm{dB} \)
\( \mathrm{P} \) between maximum and minimum intensities when

W they interfere in the space is
(1) \( 20 \log _{10}(3) \)
(2) \( 10 \log _{10}(2) \)
(3) \( 20 \log _{10}(2) \)
(4) \( 10 \log _{10}(3) \)
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