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The overall magnification of a compound microscope is |M|= 270. The distance between the eyepiece (f...

The overall magnification of a compound microscope is |M|= 270. The distance between the eyepiece (f = 5 cm) and objective lens is 19 cm. What is the focal length of the objective lens and how far from the lens should the object be placed for the image to be in focus?

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geven by eyepiece fo fe obieuhve tum fo fe 2.53 mm fo do d 140m-0 S5 i 4 cm

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