Sound intensity can be analyzed with the formula: I_2 I_1 = 10^ L_2 - L_1 10 where is…

PHYSICS · Single correct · CBSE · Physics · Sound · Sound

Problem

Sound intensity can be analyzed with the formula:

\frac{I_2}{I_1} = 10^{\frac{L_2 - L_1}{10}}

where

I

is the intensity of the sound being measured (

\text{W}/\text{m}^2

), and

L

is the perceived loudness of the sound (dB). How many times more intense is a 40 dB sound than a 20 dB sound? (A) 2 (B) 20 (C) 100 (D) 1000