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Chery Chery
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7 years ago
A laser pulse of duration 25 ms has a total energy of 1.4 J. If the wavelength of this radiation is 567 nm, how many photons are emitted in one pulse? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ∙ s)
A) 4.0 × 1018
B) 9.9 × 1019
C) 4.8 × 1019
D) 1.6 × 1017
E) 3.2 × 1017
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College Physics

College Physics


Edition: 1st
Authors:
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HotMathHotMath
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7 years ago
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Chery Author
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#2
7 years ago
Looked all over the internet for this, thank you for answering correctly
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#3
3 years ago
Thank you
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