The intensity of light from a point source is inversely
Chapter 7, Problem 7.5.9(choose chapter or problem)
The intensity of light from a point source is inversely proportional to the square of the distance from the light source. If the intensity is 4 watts per square meter at a distance of 6 m from the source, find the intensity at a distance of 8 m from the source. Find the intensity at a distance of 100 m from the source.
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