1.

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

Answer» CATION is 1000.for better answers PLEASE follow me and MARK as BRAINLIEST


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