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Unformatted text preview: of a thin positive lens of power +2.5D followed by an interval of 20 cm followed by a thin negative lens of power2.5D. Locate the principal planes and determine the EFL, BFL, and FFL. 5. An object is placed 200 cm to the left of the ±rst lens of problem 4. Where does the image form and what is the lateral magni±cation? 1 MIT OpenCourseWare http://ocw.mit.edu 2.71 / 2.710 Optics Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms ....
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 Spring '09
 SeBaekOh
 principal planes

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