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A light source emits monochromatic light of wavelength 555 nm. The source consumes 100 W of electric power and emits 35 W of radiant flux. Calculate the overall luminous efficiency.

Hrishant Goswami , 11 Years ago
Grade 10
anser 1 Answers
Deepak Patra
Sol. Overall luminous efficiency = Total lu min ous flux/Power input = 35 * 685/100 = 239.75 lumen/W
Last Activity: 11 Years ago
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