the number of photons of yellow

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A modern 200 W sodium lamp emits yellow light of wavelength 0.6 mu m. Assuming it to be 25% efficient in converting electrical energy to light, the number of photons of yellow
14
Oct
A modern 200 W sodium lamp emits yellow light of wavelength 0.6 mu m. Assuming it to be 25% efficient in converting electrical energy to light, the number of photons of yellow A modern 200 W sodium lamp emits yellow light of wavelength 0.6 mu m. Assuming it to be 25% efficient in converting electrical [...]
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