A screen receives 3 watt of radiant flux of wavelength 6000 Å . One lumen is equivalent to watt 1.5 xx 10^(-3) "watt" of monochromatic light of wavelength 5550 Å . If relative luminosity for 6000 Å is 0.685 while that for 5550 Å is 1.00, then the luminous flux of thesource is

A screen receives 3 watt of radiant flux of wavelength 6000 Å . One l

1.	A screen receives 3 watt of radiant flux of wavelength 6000 Å . One lumen is equivalent to watt 1.5 xx 10^(-3) "watt" of monochromatic light of wavelength 5550 Å . If relative luminosity for 6000 Å is 0.685 while that for 5550 Å is 1.00, then the luminous flux of thesource is
Answer» `4 XX 10^(3) lm` `3 xx 10^(3) lm` `2 xx 10^(3) lm` `1.37 xx 10^(3) lm` Answer :d

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A screen receives 3 watt of radiant flux of wavelength 6000 Å . One lumen is equivalent to watt 1.5 xx 10^(-3) "watt" of monochromatic light of wavelength 5550 Å . If relative luminosity for 6000 Å is 0.685 while that for 5550 Å is 1.00, then the luminous flux of thesource is

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