Question

The loudness of sound decreases with an:
$\left(1\right)$ Increase in the distance between the ear and the source
$\left(2\right)$ Decrease in the amplitude of the vibrating body
$\left(3\right)$ Increase in frequency of sound
$\left(4\right)$ Decrease in frequency

• A. $1$ and $4$
• B. $2$ and $3$
• C. $1,3$ and $4$
• D. $1$ and $2$

Answer 1

Answer: (D)

$1$ and $2$

The loudness or softness of a sound is determined basically by its amplitude. A sound wave spreads out from its source. As it moves away from the source its amplitude as well as its loudness decreases.

The loudness of sound decreases with an:

(1) Increase in the distance between the ear and the source

(2) Decrease in the amplitude of the vibrating body