Determine the number of photons emitted per second by a laser that emits red light o wavelength 650 nm and has a power output of

Question

Determine the number of photons emitted per second by a laser that emits red light o wavelength 650 nm and has a power output of 2 00 10 W a 6 54 10 5 photons s b 5 23x10 7 photons s c 3 834 10 6 photons s d 9 29 10 4 photons s

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