Question 4. Loudness of a note of sound is (a) Directly proportional to amplitude of the wave (b) Directly proportional to square of amplitude of wave (c) Directly proportional to velocity of the wave (d) Directly proportional to square of velocity of the wave Answer
The loudness of a note of sound is directly proportional to the square of the amplitude of the wave as loudness is also known as the intensity of the wave and this is known to be directly proportional to the square of the amplitude of the wave.
