The number of photons emitted in 10 hours by a 60 W sodium lamp (λ of photon = 6000 Å)

Chemistry · JEE Main · NTA Exams — Atomic Structure

1. 6.50 × 10²⁴
2. 6.40 × 10²³
3. 8.40 × 10²³
4. 3.40 × 10²³

Answer

(A) 6.50 × 10 24

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