An astronomical refractive telescope has an objective of focal length 20 m and an eyepiece of focal length 2 cm. Then

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Q. An astronomical refractive telescope has an objective of focal length 20 m and an eyepiece of focal length 2 cm. Then

(A) the magnification is 1000
(B) the length of the telescope tube is 20.02 m
(C) the image formed of inverted
(D) all of these

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✅ Correct Answer: (D) all of these

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