ch38-p024 - 24. Using the value hc = 1240 eVnm, the number...

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24. Using the value hc = 1240 eV·nm, the number of photons emitted from the laser per unit time is R P E == × ⋅× ph W eV nm / 600 nm)(1.60 10 J / eV) s, 200 10 1240 605 10 3 19 15 . ( ./ of which (1.0
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