# Problem: A standard biological microscope is required to have a magnification of 200X. A. When paired with a 10X eyepiece, what power objective is needed to get this magnification?B. Assume that the length of the tube of a standard biological microscope is 16 cm. What is the focal length of the objective?

###### FREE Expert Solution

A.

Magnification of the microscope:

M = mome, where mo is the magnification power of the objective, and me is the magnification power of the eyepiece.

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###### Problem Details

A standard biological microscope is required to have a magnification of 200X.

A. When paired with a 10X eyepiece, what power objective is needed to get this magnification?

B. Assume that the length of the tube of a standard biological microscope is 16 cm. What is the focal length of the objective?