Multiple Choice
A light-emitting diode has a power output of 0.3 W.If 590 nm is the average wavelength of the source,about how many photons are emitted per second? (h = 6.63 × 10−34 J⋅s,c = 3.00 × 108 m/s,and 1 nm = 10−9 m)
A) 1021
B) 1025
C) 1018
D) 1029
Correct Answer:
Verified
Correct Answer:
Verified
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