Question

Which of the following factors affect the loudness of sound?

• A. Distance from the source of sound.
• B. Amplitude of the wave.
• C. Frequency of the sound
• D. Sensitivity of the listener.

Answer 1

Answer: (A), (B), (D)

The correct options are
A Distance from the source of sound.
B Amplitude of the wave.
D Sensitivity of the listener.

Loudness of the sound increases with the amplitude of the sound.
As distance increases from the source, the amplitude reduces and, so does the loudness. So, it also depends upon the distance from the source.
Presence of barriers (e.g. trees, walls, etc.) between the sound source and the listener depriciates the loudness of the sound by absorbing some of its energy and decreasing its amplitude.
Also, it depends on the sensitivity of the listener towards a sound.
Frequency of sound doesn't affect the loudness of sound much.