A source emits 12:0 J of light of wavelength 620 nm and 80 J of light of wavelength 580 nm per second. The relative luminosity at 620 nm is 35% and that at 580 nm is 80%. Find (a) the total radiant flux, (b) the total luminous flux and (c) the luminous efficiency.
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![A SOurce emits 12:0 J of light of wavelength 620 nm and
8-0 J of light of wavelength 580 nm per second. The
relative luminosity at 620 nm is 35% and that at 580 nm
is 80%. Find (a) the total radiant flux, (b) the total
luminous flux and (c) the luminous efficiency.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F22a8dbc3-e36c-4dd7-ab8f-6e9d5cb53db6%2F05144b77-59f5-4879-b712-ee3862dd0a54%2F1hysijo_processed.jpeg&w=3840&q=75)
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