Electromagnetic radiation with a wavelength of 425 nm, Ask an Expert

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Electromagnetic radiation with a wavelength of 425 nm appears as violet light to the human eye. The energy of one photon of this light is 4.68 × 10-19 J. Thus, a laser that emits 1.3 × 10-3 J of energy in a pulse of light at this wavelength produces __________ photons in each pulse.

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Category:- Chemistry
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