A ruby laser emits an intense pulse of light
Chapter 29, Problem 43(choose chapter or problem)
A ruby laser emits an intense pulse of light that lasts a mere10 ns. The light has a wavelength of 690 nm, and each pulse hasan energy of 500 mJ.a. How many photons are emitted in each pulse?b. What is the ra/e of photon emission, in photons per second,during the I 0 ns that the laser is "on"?
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