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16-05-2018
Chemistry

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If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is _______ lux. A. 648 B. 24 C. 8 D. 216

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idontknow99 idontknow99

16-05-2018

My friend told me it was C, 8 !

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Sam123321939 Sam123321939

17-05-2018

I took the test and the answer was C. 8

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