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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. 24 B. 216 C. 648 D. 8
If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is 8 lux. E = I / s² E = 72/9 = 8 lux
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Asked 4/3/2019 11:11:27 AM
Updated 7/8/2019 7:28:00 AM
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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 8 lux.
E = I / s²
E = 72/9 = 8 lux
Added 7/8/2019 7:28:00 AM
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