^Simple microscope
^Simple microscope
A simple microscope is simply a converging lens of small focal length (f < D).
Suppose a short object has a height h0 is viewed by eye without using a lens by pacing it at near point, then the visual angle made by the object eye is
Far point case
It the object is placed at F of a conves lens such that the images at far point (∞) is formed as shown,
then the magnifying power of lens 
