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To examine a particular blood sample in biology lab, a student uses a compound microscope set to have a magnification of -4530. The objective and eyepiece are both attached to a tube which is 18 cm in length and the eyepiece has a focal length of 2.64 cm. The near point of the person using the microscope is 25 and you can assume she can view the image produced with a fully relaxed eye.

1) What is the focal length of the objective?

f =

2) What is the distance between the blood sample and the objective lens?

d

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