A) \[3\times {{10}^{10}}m\]
B) \[3.35\times {{10}^{11}}m\]
C) \[1.95\times {{10}^{11}}m\]
D) \[4.32\times {{10}^{10}}m\]
Correct Answer: C
Solution :
Limit of resolution of the telescope \[\alpha =\frac{1.22\lambda }{a}=\frac{d}{x}\] Or \[d=\frac{1.22\lambda \,x}{a}\] \[=\frac{1.22\times 5\times {{10}^{-7}}\times 8\times {{10}^{16}}}{0.25}\] \[=1.95\times {{10}^{11}}m\]You need to login to perform this action.
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