A light detector (your eye) has an area of 2.00 " 10#6 m2
Chapter , Problem 7(choose chapter or problem)
A light detector (your eye) has an area of 2.00 " 10#6 m2 and absorbs 80% of the incident light, which is at wavelength 500 nm. The detector faces an isotropic source, 3.00 m from the source. If the detector absorbs photons at the rate of exactly 4.000 s#1 , at what power does the emitter emit light?
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