A) 1 km/sec
B) 4 km/sec
C) 8 km/sec
D) 11.2 km/sec
Correct Answer: A
Solution :
\[v=\sqrt{\frac{GM}{r}}=\sqrt{\frac{6.67\times {{10}^{-11}}\times 6\times {{10}^{24}}}{384000\times {{10}^{3}}}}=1\,km/s\]You need to login to perform this action.
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