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A 200 W sodium street lamp emits yellow light of wavelength 0.6 um. Assuming it to be 25% efficient in converting electrical energy to
A 200 W sodium street lamp emits yellow light of wavelength 0.6 um. Assuming it to be 25% efficient in converting electrical energy to light, the number of photons of yellow light it emits per second is (a) 1.5 1020 (c) 62 1020 (b) 6 x 108 (d) 3 10
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Physical Chemistry Thermodynamics And Kinetics
Authors: Peter Atkins, Julio De Paula
10th Edition
1464124515, 9781464124518
