A) 40 km
B) 65 km
C) 48 km
D) 80 km
Correct Answer: B
Solution :
\[d\,\,=\,\sqrt{2R{{h}_{T}}}\,+\,\sqrt{2R{{h}_{R}}}\,=\,\sqrt{2R}\,(\sqrt{{{h}_{T}}}\,+\,\sqrt{{{h}_{R}}})\] \[d\,\,=\,\sqrt{2\times 6400\times {{10}^{3}}}\,(\sqrt{140}+\sqrt{40})\,=\,65\,km\]You need to login to perform this action.
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