How many times louder is the intensity of
sound at a rock concert in comparison with
that of a whisper, if the two intensity levels
are 130 dB and 2 dB, respectively?
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Question
How many times louder is the intensity of
sound at a rock concert in comparison with
that of a whisper, if the two intensity levels
are 130 dB and 2 dB, respectively?
You must be logged in to post a comment.
Answer: the intensity of sound at a rock concert will be 6.31 × 10^12 time louder than that of a whisper.
Explanation: Given that sound at a rock concert power is 130 dB of intensity l2
a whisper power is 2 dB of intensity l1
Using the formula
130dB – 2dB = 10Log(I2/I1)
128/10 = logI2/I1
12.8 = log (I2/I1)
I2/I1 = 6.31 × 10^12
Therefore, the intensity of sound at a rock concert will be 6.31 × 10^12 time louder than that of a whisper.