How many photons are emitted during (5.0 mathrm{~s}) of operation of a red laser pointer? The device
Question:
How many photons are emitted during \(5.0 \mathrm{~s}\) of operation of a red laser pointer? The device outputs \(2.8 \mathrm{~mW}\) at a \(635 \mathrm{~nm}\) wavelength.
A. \(4.5 \times 10^{10}\)
B. \(4.5 \times 10^{11}\)
C. \(4.5 \times 10^{15}\)
D. \(4.5 \times 10^{16}\)
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To find the number of photons emitted during 50 texts of operation of the red laser pointer we first ...View the full answer
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Related Book For 
College Physics A Strategic Approach
ISBN: 9780321907240
3rd Edition
Authors: Randall D. Knight, Brian Jones, Stuart Field
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