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You are given following three lenses. Which two lenses will you use as an eyepiece and as an objective to construct an astronomical telescope?

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Telescope: L1-Objective; L2-Eye Pieces 

Microscope: L3-Objective; L2-Eye Pieces 

Cause: Telescope has objective lens of low power and high aperture than eye piece

Microscope has objective lens of high power and low aperture than eye piece.

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