A 680 X microscope uses a 0.40-cm-focal-length
Chapter 33, Problem 33.73(choose chapter or problem)
A 680 X microscope uses a 0.40-cm-focal-length objectivelens. If the barrel length is 17.5 cm, what is the focal lengthof the eyepiece? Assume a normal eye and that the finalimage is at infinity.
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