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  2. State the condition under which a large magnification can be achieved in an astronomical telescope.    
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State the condition under which a large magnification can be achieved in an astronomical telescope.

 

 

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S safeer

In an astronomical telescope, a large magnification can be achieved when the focal length of the objective would be much greater than the focal length of the eyepiece.

fo> > fe

Where, fo = focal length of the objective lens

            fe= focal length of the eyepiece

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