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  3. the illumination of an object by a light source is

The illumination of an object by a light source is directly proportional to the strength of...

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Basic Math

The illumination of an object by a light source is directlyproportional to the strength of the source and inverselyproportional to the square of the distance from the source. If twolight sources, one four times as strong as the other, are placed 16ft apart, how far away from the stronger light source should anobject be placed on the line between the two sources so as toreceive the least illumination? (Round your answer to two decimalplaces.)

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