Ray diagrams for an astronomical telescope

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Homework Statement


An astronomical telescope is constructed using 2 convex lenses. The objective lens is of focal length 40cm and eyepiece lens is of focal length 10cm. Let d be the distance between the 2 lenses. Draw ray diagrams for the following situations.
1.When d=50cm
2.When d>50cm
3.When 40cm<d<50cm
The telescope is used to observe objects at infinity.

Homework Equations





The Attempt at a Solution


In each situation I drew the objective lens's incident ray and the refracted ray up to its focal plane. But i do not understand how to complete them.
raydiagrams_zps05303d3a.jpe
 
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The image from the objective lens will be the object for the eyepiece. Using this object, draw the rays to form the image from the eyepiece.