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Question
Answer the following question in detail.
What is the limitation in increasing the magnifying powers of the astronomical telescope?
Solution
In the case of telescopes,
M =
Where fo = focal length of the objective
fe =focal length of the eye-piece
The length of the telescope for normal adjustment is, L = fo + fe .
Thus, the magnifying power of the telescope can be increased only within the limitations of the length of the telescope.
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