
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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At a distance of 13m from the point source the intensity is 80 dBm. At what distance from the source will the intensity be 40 dB
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Intensity
(given)
Intensity due to point source varies with distance (r) ,
I
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