Question
The resolving power of a telescope depends upon the...............
(a) length of the telescope
(b) focal length of an objective
(c) diameter of an objective
(d) focal length of an eyepiece
Solution
(c) diameter of an objective
R.P of telescope = `1/(d theta)=a/(1.22lambda)`
Thus, it is clear that a telescope with a large diameter of the objective has higher resolving power. Thus, the resolving power of a telescope depends on the diameter of an objective.
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Solution The Resolving Power of a Telescope Depends Upon the Concept: Resolving Power of a Microscope and Telescope.
