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GmatKiss
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The "luminous flux," or perceived brightness, of a light source is measured in
lumens and is inversely proportional to the square of the distance from the light. If
a light source produces 200 lumens at a distance of 3 meters, at what distance will
the light source produce a luminous flux of 25 lumens?
3R2
9R3
6R2
6R3
8R2
Please read 3R2 as 3(ROOT(2))
lumens and is inversely proportional to the square of the distance from the light. If
a light source produces 200 lumens at a distance of 3 meters, at what distance will
the light source produce a luminous flux of 25 lumens?
3R2
9R3
6R2
6R3
8R2
Please read 3R2 as 3(ROOT(2))
