Posted by **Cassie** on Saturday, February 23, 2013 at 4:50pm.

A standard biological microscope is required to have amagnification of 200.

1)When paired with a 10 eyepiece, what power objective isneeded to get this magnification? Assume that the length of thetube of a standard biological microscope is 15 .

2) What is the focal length of the objective?

- Physics101 -
**ED**, Sunday, January 26, 2014 at 4:16pm
1. 20.0

- Physics -
**Anonymous**, Thursday, May 14, 2015 at 11:58pm
1- M_o=200x/10x=20

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