what percentage of visible light is given off by a 100-watt incandescent lamp A. 10 percent B. 30 percent C. 50 percent
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what percentage of visible light is given off by a 100-watt incandescent lamp A. 10 percent B. 30 percent C. 50 percent
what percentage of visible light is given off by a 100-watt incandescent lampA. 10 percent B. 30 percentC. 50 percentD. 80 percent