Question

derivation of compound microscope

Answer 1

Magnifying power: The ratio of the angle subtended by the eye by the final virtual image, to the angle subtended at the eye by the object

Magnifying power 

Where angle subtended by the eye by final image

              angle subtended by the eye by object.

              h’ =height of image, h = height of object

              

The eye piece acts as a simple microscope.

                       

where D = distance between eye piece to final image

and = focal length of eye piece.

As Length of microscope tube.

                     

Where distance between objective lens to image A’B’

               distance between objective lens to object AB

               focal length of objective lens.

Case II: When the final image is formed at infinity



When A’B’ lie on focus of eye piece.

             

so final image A”B” is formed at infinity

Answer 2

compound microscope is an optical device used to see highly magnified image of tiny objects.
it is consist of two convex lenses of short focal length arranged coaxial at the free end of tube at a suitable fixed distance.

Mark my answer as brainlist