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History, 21.07.2019 12:00 ijohnh14

If a 72-candela light source is located at a distance of 3 meters from a surface, the iluminance on the surface is a. 8 lux. b. 24 lux. c. 216 lux. d. 648 lu

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If a 72-candela light source is located at a distance of 3 meters from a surface, the iluminance on...
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