How many photons per second emerge from a laser of power 2.00 mW with wavelength 605 nm? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
A) 6.09 × 1015 photons/s
B) 5.03 × 1012 photons/s
C) 3.07 × 1015 photons/s
D) 3.07 × 1013 photons/s
A
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