RAY DIAGRAM OF COMPOUND MICROSCOPE :
•Draw a plane line using scale on a paper 
•Then take 5 dot(.) interval of 1cm 
•on 3rd point draw a normal above 2cm and below 2cm
•make a converging lens using protactor or compas 
•Indicate 1st point as 2f1 and, 2nd point as F1 middle point is 0 4th point is F2 
•put ray diagram law, the ray which is parallel to principal axis goes through focous and the ray which is go through center 0 ,will go undeviated
•The point will be formed where rays meet, draw a normal on that, point touches the principal axis that is the image formed (real & invrted) 
•Take same  distance of center to where image formed 
•In that position make a lens of greater than objective lens that is Eyepiece Lens
•For eyepiece lens the image is object, So again using Ray diagram law 
•NOTE: Take focous Combination distance of Objective lens center And Eye piece lens center ,that is the focous of Eyepiece lens
• Now joins the points

Ray Diagram of Telescope:
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......... To be continued