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  • Four sources of sound each of sound level 10 dB are sounded together in phase the result intensity level will be <img alt="\left(\log _{10} 2=0.3010\right)" src="https://entrancecorner.oncodec

Four sources of sound each of sound level 10 dB are sounded together in phase the result intensity level will be \left(\log _{10} 2=0.3010\right)

Option: 1

40 dB


Option: 2

26 dB


Option: 3

22 dB


Option: 4

13 dB


Answers (1)

best_answer

\begin{aligned} A_B & =4 \mathrm{~A} \\ \therefore \quad I_R & =16 I \\ 10 & =10 \log _{10}\left(\frac{I_R}{I_0}\right) \\ L & =10 \log _{10}\left(\frac{16 I}{I_0}\right) \\ \therefore \quad L-10 & =10 \log _{10}(16) \\ L & =22 \mathrm{~dB} \quad \end{aligned}

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himanshu.meshram

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