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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 6th Edition
23
Light: Geometric Optics
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23-2: Reflection; Plane Mirrors
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23-3: Spherical Mirrors
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23-4: Index of Refraction
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23-5: Refraction: Snell's Law
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23-6: Total Internal Reflection
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23-7 and 23-8: Thin Lenses
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23-9: Lens Combinations
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23-10: Lensmaker's Equation
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Problem 5
A
5.9×10−6 m25.9 \times 10^{-6} \textrm{ m}^2
Giancoli 6th Edition, Chapter 23, Problem 5 solution video poster
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COMMENTS
By Mr. Dychko on Sun, 10/7/2012 - 12:47 AM

Gosh, you're right! Thanks for spotting that. I used the pupil diameter as the radius, forgetting to divide the diameter by two. I'll revise this video, and I've corrected the quick answer. Thanks again, and best wishes with your studies.

By 15659455 on Sat, 10/6/2012 - 11:43 PM

the area calculation is wrong is it not?

By Mr. Dychko on Sun, 12/2/2012 - 5:29 AM

This video has been updated.

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