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If the intensity of sound is doubled, by how many decibels does the sound level increase?

If the intensity of sound is doubled, by how many decibels does the sound level increase?

Grade:10

1 Answers

Jitender Pal
askIITians Faculty 365 Points
9 years ago
Sol. We know that, β = 10 log base 10 J/I base 0 According to the questions β base A = 10 log base 10 (2I/I base 0) ⇒β base B – β base A = 10 log (2I/I) = 10 × 0.3010 = 3 dB.

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