a speaker from brand A can generate a sound level of 60dB what is the sound...
a speaker from brand A can generate a sound level of 60dB what is the sound level of a speaker from brand Barber if it can generate sound that has 300 times higher intensity than that of brand A
Homework Answers
To me it seems a very straight forward question.
As intensity of A is 60 db and intensity of B is 300 times greater than A,
Intensity of A in watt/m2 = 0.000001 watt/m2
As from the formula I(db) = 10Log I/Io Here I = intensity, and Io = reference intensity = 10^-12 watt/m2
So, intensity of B = 300x0.000001 = 0.003 watt/m2
So, from the formula again I(db) of B = 10 Log(0.003/10^-12)
I(db)B = 10*8.47 = 84.7 db Ans.
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