A) Yes, it is possible with the same aperture size.
B) Possible also with an aperture half the present diameter.
C) No, it is not possible.
D) Given data is not sufficient.
Correct Answer: A
Solution :
Given:\[d=3\times {{10}^{-2}}m\] \[\lambda =5.5\times {{10}^{-7}}m\] Limit of resolution, \[\Delta \theta =\frac{1.22\lambda }{d}\] \[=\frac{1.22\times 5.5\times {{10}^{-7}}}{3\times {{10}^{-2}}}=2.23\times {{10}^{-5}}red.\] At a distance of 80 m , the telescope is able to resolve between two points which are separated by \[2.23\times {{10}^{-5}}\times 80m\]\[=1.78\times {{10}^{-3}}m\]
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