I an astronomical telescope has the magnification of -320
If an astronomical telescope has the magnification of -32.0 ? and its objective lens has a focal length of 77 cm, what is the focal length of its eyepiece?
cm
What is the overall length of the telescope when adjusted for a relaxed eye?
Cm
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If an astronomical telescope has the magnification of -32.0 ? and its objective lens has a focal length of 77 cm, what is the focal length of its eyepiece
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