Determine the number of photons emitted per second by a laser that emits red light of wavelength 650 nm and has a power output of 2.00 ×10- w. (a) 6.54×10'5 photons/s (b) 5.23×10'" photons/s (c) 3.834×1016 photons/s (d) 9.29×10“ photons/s
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