তীব্রতা

If the sound level is increased by 3dB, what is the corresponding change in the intensity level?

IUT 13-14

P+3=10log(II0) P+3=10 \log \left(\frac{I^{\prime}}{I_{0}}\right)

P+3=10log(xII0)P+3=10logx+10log(II0)10logx=3;x=2 \Rightarrow P+3=10 \log \left(\frac{x I}{I_{0}}\right) \Rightarrow P+3=10 \log x+10 \log \left(\frac{I}{I_{0}}\right) \therefore 10 \log x=3 ; x=2

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