The sound level of a dog's bark is 50 dB. The intensity of a rock concert is 10,000 times that of dog's bark. What is the sound level of the rock concert?

Question

The sound level of a dog's bark is 50 dB. The intensity of a rock concert is 10,000 times that of dog's bark. What is the sound level of the rock concert? (A) 50 dB (B) 100 dB (C) 90 dB (D) 60 dB

Tardigrade Admin · Accepted Answer

50 = 10 log ( (I/Io)) Also L = 10 log ((104I/Io)) ∴ L - 50 = 10log(104) = 40 L = 90 dB

Q. The sound level of a dog's bark is $50 d B$ . The intensity of a rock concert is $10, 000$ times that of dog's bark. What is the sound level of the rock concert?

50 dB

100 dB

90 dB

60 dB

$50 = 10 l o g (\frac{I}{I _{o}})$
$A l so L = 10 l o g$ $(\frac{1 0 ^{4} I}{I _{o}})$
$∴ L - 50 = 10 l o g (1 0^{4}) = 40$
$L = 90 d B$

Q. The sound level of a dog's bark is 50dB. The intensity of a rock concert is 10,000 times that of dog's bark. What is the sound level of the rock concert?