When we hear a sound, we understand it mainly on the basis of three parameters, called intensity, pitch and tone. These quatities, in turn, depend on cetain measurable quantities associated with the sound.
Which of the following statements regarding the intensity and loudness of a sound is not correct?
A. The unit of intensity is `W//m^(2)`
B. The unit of loudness is the decibel.
C. The loudness of a sound is directly proportional to its intensity
D. The intensity depends on the frequency, amplitude, density of the medium and the velocity of sound in the medium.
