Question

In a classroom, the student sitting on the first bench will hear the teacher’s voice louder than the student sitting on the last bench. This change in the loudness is due to the fact that:

• A. the amplitude of the sound decreases with an increase in the distance.
• B. the frequency of the sound decreases with an increase in the distance.
• C. the amount of sound passing through the unit area decreases with an increase in the distance.
• D. the sound is absorbed by the surrounding objects.

Answer 1

The correct option is C the amount of sound passing through the unit area decreases with an increase in the distance.