A) \[\frac{10}{7}R\]
B) \[\frac{7}{10}R\]
C) \[\frac{3}{7}\,R\]
D) \[\frac{2}{7}\,R\]
Correct Answer: C
Solution :
\[g'\,\,=\,\,0.49\,g\] \[g'\,\,=\,\,\frac{GM}{{{(R+h)}^{2}}}\] \[0.49\times \frac{GM}{{{R}^{2}}}\,\,=\,\,\frac{GM}{{{(R+h)}^{2}}}\] \[7\left( R+h \right)\,\,=\,\,10\,R\]
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