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<Ch 27 HW (Part 1) Problem 27.74 If a 120-W lightbulb emits 2.5% of the input energy as visible light (average wavelength 550
note - I posted this previously and the answer received was wrong its not 8.3 x 10^20 photons/s
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120 W 2:14 симли transmited - ( X 2.0 3. П) Гоо Tukusing Now р -- (Yen) чји Т- — 2V чт С. Power on pupil 37 x 7 ( 4 mm x 1032NO | sung and te on и с 3х10 36x1-19 8.3x lo! 2 photons / fee

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