Question Detail

PHY 104 Pitch, loudness, quality, timber Objective Question

Question

How is Sound intensity (acoustic intensity) defined in the document?
Options
A The amplitude of sound waves.
B The power carried by sound waves per unit area perpendicular to the area.
Correct Answer
C The frequency of sound waves.
D The energy of sound waves per unit volume.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The document defines it as 'Sound intensity or acoustic intensity, is the power carried by sound waves per unit area in a direction perpendicular to the area.'

Hint

Refer to the definition given at the end of the 'Variation of Intensity of Sound with distance from the source' section.

Question Info