Multiple Choice
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
Correct Answer:
Verified
Correct Answer:
Verified
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