Question

Sound energy passing per second through a unit area held perpendicular to the direction of propagation of sound waves is called the ___ .

• A. Intensity of sound
• B. pitch of sound
• C. loudness of sound
• D. quality of sound

Answer 1

The correct option is A

Intensity of sound

Sound energy passing per second through a unit area held perpendicular to the direction of propagation of sound waves is called intensity of sound. The unit of intensity of sound is $\frac{W}{m^2}$.