QuestionMay 1, 2025

33. The relationship between noise and distance from the source follows the inverse square law. This means that doubling the distance: A. Increases the sound pressure level by 1/4 B. Reduces the sound pressure level by 1/4 C. Reduces the sounds pressure level by two times D. Reduces the sound pressure level by 1/2

33. The relationship between noise and distance from the source follows the inverse square law. This means that doubling the distance: A. Increases the sound pressure level by 1/4 B. Reduces the sound pressure level by 1/4 C. Reduces the sounds pressure level by two times D. Reduces the sound pressure level by 1/2
33. The relationship between noise and distance from the source follows the inverse
square law. This means that doubling the distance:
A. Increases the sound pressure level by 1/4
B. Reduces the sound pressure level by 1/4
C. Reduces the sounds pressure level by two times
D. Reduces the sound pressure level by 1/2

Solution
4.6(273 votes)

Answer

B. Reduces the sound pressure level by 1/4 Explanation 1. Understand the inverse square law The inverse square law states that intensity is inversely proportional to the square of the distance from the source. If distance doubles, intensity becomes \frac{1}{4} of the original. 2. Relate intensity to sound pressure level Sound pressure level (SPL) decreases as intensity decreases. Doubling the distance reduces SPL to \frac{1}{4} of its original value.

Explanation

1. Understand the inverse square law<br /> The inverse square law states that intensity is inversely proportional to the square of the distance from the source. If distance doubles, intensity becomes $\frac{1}{4}$ of the original.<br /><br />2. Relate intensity to sound pressure level<br /> Sound pressure level (SPL) decreases as intensity decreases. Doubling the distance reduces SPL to $\frac{1}{4}$ of its original value.
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