Evaluate the focal length of the objective

Reference no: EM13548363

A compound microscope has the objective and eyepiece mounted in a tube that is 18.0 cm long. The focal length of the eyepiece is 2.28 cm, and the near-point distance of the person using the microscope is 25.0 cm. If the person can view the image produced by the microscope with a completely relaxed eye, and the magnification is -4250, what is the focal length of the objective? (Include the sign.)

Reference no: EM13548363

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