<PRE><B>Question 937182</B>
i = C/dd
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intensity at original position:
a = C/25
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intensity one foot closer to light:
b = C/16
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ratio of intensities:
b/a = (C/16)/(C/25)
b/a = (1/16)/(1/25)
b/a = 25/16
b/a = 1.5625
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answer:
1.5625 times greater
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