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A Helium-Neon Laser Emits Light at 632

Question 7

Multiple Choice

A helium-neon laser emits light at 632.8 nm.If the laser emits A helium-neon laser emits light at 632.8 nm.If the laser emits Photons/second,what is its power output in mW? (c = 3.00 × 10<sup>8</sup> m/s,h = 6.626 × 10<sup>-34</sup> J ∙ s) A) 57.2 mW B) 28.6 mW C) 37.2 mW D) 45.7 mW
Photons/second,what is its power output in mW? (c = 3.00 × 108 m/s,h = 6.626 × 10-34 J ∙ s)


A) 57.2 mW
B) 28.6 mW
C) 37.2 mW
D) 45.7 mW

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