A physics student epoxies two converging lenses to the opposite ends of a 20-cm long tube.One lens has a focal length of f1 = 4.0 cm and the other has a focal length of f2 = 2.0 cm.She wants to use this device as a microscope.What is the magnification of this homemade microscope?
A) 25
B) 46
C) 63
D) 79
E) 80
Correct Answer:
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