A) 12.86 km
B) 13.0 km
C) 25.38 km
D) 90.9 km
Correct Answer: A
Solution :
Ratio of acceleration due to gravity \[\frac{g}{g}=\frac{978}{980}=1-\frac{d}{R}\] or \[\frac{d}{R}=1-\frac{978}{980}=\frac{2}{980}\] or \[d=\frac{2R}{980}\] \[=\frac{2\times 6300}{980}\] \[=12.86\,km\]You need to login to perform this action.
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