A laser pointer used in the classroom emits light at 4950 Å, at a power of 4.00 mW. (One watt is the SI unit of power, the measure of energy per unit of time. 1 W = 1 J/s). How many photons are emitted from the pointer in 115 seconds?

Chemistry: Principles and Practice
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Chapter7: Electronic Structure
Section: Chapter Questions
Problem 7.29QE: This laser emits green light with a wavelength of 533 nm. (a) What is the energy, in joules, of one...
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A laser pointer used in the classroom emits light at 4950 Å, at a power of 4.00 mW. (One watt is the SI unit of power, the measure of energy per unit of time. 1 W = 1 J/s). How many photons are emitted from the pointer in 115 seconds?

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