1 : 5
2 : 5
3 : 5
4 : 5
Correct answer is B
g = \(\frac{GM}{R^2}\)
\(\frac{G_1M_1}{r^2_1}\) = \(\frac{G_2M_2}{r^2_2}\)
\(\frac{G_1M_1}{r^2_1}\) = \(\frac{G_2 {\times}10 M_1}{(2r_1)^2}\)
\(\frac{G_1}{G_2}\) = \(\frac{2}{5}\)
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