The objective lenses of two telescope have the same apertures but their focal lengths are in the ration `1 : 2`. Compare the resolving powers of the two telescopes.
Text Solution
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Resolving power of a telescope is `RP = (D)/(1.22 lambda)` As aperture `D` is same and `lambda` is same, therefore, resolving powers of the two telescope are same. Difference in their focal lengths does not affects their resolving power.
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