The power output of a laser is measured by its wattage, the number of joules of energy it radiates per second (1 W = 1 J s). A 225-mW krypton laser produces a beam of yellow light with a wavelength of 568.2 nm (5.682×10-' m). (a) Calculate the energy carried by each photon. (b) Calculate the number of photons emitted by the laser per second. (a) J per photon (b) photons per second

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Chapter1: Chemical Foundations
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The power output of a laser is measured by its wattage, the number of joules of energy it radiates per second (1 W = 1 J s). A 225-mW krypton laser
produces a beam of yellow light with a wavelength of 568.2 nm (5.682×10-' m).
(a) Calculate the energy carried by each photon.
(b) Calculate the number of photons emitted by the laser per second.
(a)
J per photon
(b)
photons per second
Transcribed Image Text:The power output of a laser is measured by its wattage, the number of joules of energy it radiates per second (1 W = 1 J s). A 225-mW krypton laser produces a beam of yellow light with a wavelength of 568.2 nm (5.682×10-' m). (a) Calculate the energy carried by each photon. (b) Calculate the number of photons emitted by the laser per second. (a) J per photon (b) photons per second
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