Optical Instruments - Simple Microscope

Physics

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Simple microscope

A simple microscope or a magnifying glass is an optical device used to obtain magnification of small objects for better clarity of vision. It is a convex lens of short focal length mounted in a lens holder. To obtain magnification, it is placed at a small distance from the object and virtual image is formed. 
It is used to see very small letters and figures, by watchmakers, etc.

formula

Magnifying power of simple microscope


Least distance of distinct vision (=25 cm)
Focal length of the lens

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