Energy of each photon, E=λhc
⇒E=600×10−96.6×10−34×3×108
⇒E=3.3×10−19J
Number of photons emitted per second, N=EP
⇒N=3.3×10−193.3×10−3
⇒N=1016
The number of photons per second on an average emitted by the source of monochromatic light of wavelength 600nm, when it delivers the power of 3.3×10−3W will be :(h=6.6×10−34Js)
Held on 30 Apr 2021 · Verified 9 Jul 2026.
1018
1017
1016
1015
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