an astronomical telescope has an objective lens with a focal length of 200 mm an

Question

an astronomical telescope has an objective lens with a focal length of 200 mm and an eyepiece with a focal length of 40 mm. if the eyepieve creates a virtual image at infinity, the distance between these two lenses should be an astronomical telescope has an objective lens with a focal length of 200 mm and an eyepiece with a focal length of 40 mm. if the eyepieve creates a virtual image at infinity, the distance between these two lenses should be an astronomical telescope has an objective lens with a focal length of 200 mm and an eyepiece with a focal length of 40 mm. if the eyepieve creates a virtual image at infinity, the distance between these two lenses should be

Explanation / Answer

length of the scope L = fo +fe

L = 200 + 40

L = 240 mm

L = 24 cm

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