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How does the intensity of a sound wave change if the distance from the source is increased by a factor of 4? A. The intensity de
Question
How does the intensity of a sound wave change if the distance from the
source is increased by a factor of 4?
A. The intensity decreases by a factor of 4.
B. The intensity increases to by a factor of 16.
c. The intensity decreases by a factor of 16.
D. The intensity increases by a factor of 4.
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2021-09-05T05:51:47+00:00
2021-09-05T05:51:47+00:00 1 Answers
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Answer:
The new intensity decreases by a factor of 16.
Explanation:
The intensity of sound wave is given by :
P is power
A is area
or
If the distance from the source is increased by a factor of 4, r’ = 4r
So,
So, the new intensity decreases by a factor of 16.