Answer:
R.P. of an astronomical telescope \[=\frac{D}{1.22\lambda }=\frac{Dv}{1.22c}\] (i) When frequency of the incident light is increased, the resolving power of the telescope increases. (ii) When the focal length of the objective lens is increased, the resolving power does not change. (iii) When aperture of the objective lens is halved, the resolving power of the telescope is also halved.
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