Question

Loudness of sound is determined by its _________________.

• A. Amplitude
• B. Frequency
• C. Velocity
• D. Source

Answer 1

The correct option is A Amplitude

Loudness of sound is determined by its amplitude.
The intensity or loudness of a sound depends upon the extent to which the sounding body vibrates, i.e., the amplitude of vibration. A sound is louder as the amplitude of vibration is greater, and the intensity decreases as the distance from the source increases.