The characteristic of a vibration that determines its intensity is the
A
Frequency
B
Overtone
C
Wavelength
D
Amplitude
Verified Correct Answer: D.
Physical Principles & Numerical Solution
The higher the amplitude of sound the larger the loudness of sound and the lower the amplitude of sound waves the softer the loudness of sound by this we get to know that the amplitude of a sound wave decides the loudness of sound or we can call it the intensity of sound.
Source: Myschool Past Questions Archive (Record #27403)