Question

A small refracting telescope has an objective of focal length 100 cm. If the eyepiece has a focal length of 4.0 cm, what is the magnification of the telescope ?
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Answer 1

Answer:

An astronomicla telescope has an objective of focal length 20 cm and an eyepiece of focal length 4.0 cm. The telescope is focussed to see an object 10 cmfrom the objective.the fnal imae is formed at infinity.Find the length of the tube and the angular magnification produced by the telescope... it's for your helpful....

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Answer 2

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=> We have to find the magnification of telescope.

=> 100/4.0

=> 1000/40

=> 100/4

=> 25 Ans.