Two converging lenses, one with f = 4.0 cm and the other
Chapter 6, Problem 71GP(choose chapter or problem)
Two converging lenses, one with f = 4.0 cm and the other with f = 44 cm, are made into a telescope. (a) What are the length and magnification? Which lens should be the eyepiece? (b) Assume these lenses are now combined to make a microscope; if the magnification needs to be \(25\times\), how long would the microscope be?
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