Question

# How is loudness of the sound is related to the intensity of wave producing it?L = k log INone of theseL = k log I2L = k log 1/I

Solution

## The correct option is A L = k log ILoudness of the sound depends on its intensity, but loudness is not same as intensity. The loudness L and intensity I is given as, L = k log I where k is a constant of proportionality. Loudness increases with the increase in intensity, but not in the same proportion. Taking k = 1, the sound level is written as L = 10 log10 (I1/I0 ) dB

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