Question

Unit for measuring the loudness of sound is _________________.

• A. Decibel
• B. Pascal
• C. Newton
• D. Newton-metre

Answer 1

The correct option is A Decibel

Unit for measuring the loudness of sound is decibel.
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. Loudness is measured in units called decibels.