Answer to Question #128145 in Physics for hariom

Question #128145

one violin playing at certain location the measured sound pressure level is 50dB. what will be the pressure if four violoins are playing

Expert's answer

"P=10\\lg{\\frac{I}{I_0}}\\\\P'=10\\lg{\\frac{4I}{I_0}}=10\\lg{\\frac{I}{I_0}}+10\\lg{4}\\\\P'=50+10\\lg{4}=56\\ dB"

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