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What is the essential difference between a terrestrial telescope and an astronomical telescope ?

1)One of the lenses in a terrestrial telescope is concave

2)the final image formed in a terrrestrial telescope is virtual

3)a terrestrial telescope forms an erect image while an astronomical telescope forms an inverted image

4)a terrestrial telescope forms an inverted image while an astronomical telescope forms an erect image


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    a terrestrial telescope forms an erect image while an astronomical telescope forms an inverted image

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