Physics 55.4 Optics- Multiple Lenses (6 of 12) The Triple Lens: A 2nd Method (Part 1 of 2)

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In this video I will derive (part 1 of 2) the equivalent focal length of 3 lenses, 1-convex, 1-concave, and 1-convex, respectively, touch each other.

Next video in this series can be seen at:
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