Question

What is loudness of sound? On what factors do it depend?

Answer 1

1. The loudness of a sound refers to the intensity of the vibrating source which is producing the sound.
2. Since the intensity of the sound depends upon the amplitude, thus, loudness will also be dependent upon amplitude.
3. This implies that the sound of higher amplitude will be heard louder.
4. Loudness is directly proportional to the square of the amplitude of a sound wave-
5. $L\alpha A^2$; where L is Loudness and A is amplitude.