A compound microscope consists of more than one optical lens to generate magnified images than a simple microscope.
A compound microscope is the most common type of light (optical) microscopes. The term “compound” refers to the microscope having more than one lens. Basically, compound microscopes generate magnified images through an aligned pair of the objective lens and the ocular lens. In contrast, “simple microscopes” have only one convex lens and function more like glass magnifiers.

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What is a Microscope? Function and Magnification
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