A 200 W sodium street lamp emits yellow light of wavelength 0.6 μ m. Assuming it to be…
Chemistry · NEET · NTA Exams — Structure of Atom
A 200 W sodium street lamp emits yellow light of wavelength 0.6 μm. Assuming it to be 25% efficient in converting electrical energy to light, the number of photons of yellow light it emits per second is
- \(62 \times 10^{28}\)
- \(3 \times 10^{19}\)
- \(1.5 \times 10^{20}\)
- \(6 \times 10^{1}\)
Answer
(B) 3 10^ 19
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