A) \[\frac{1}{3}\]
B) \[\frac{1}{2}\]
C) \[\frac{1}{4}\]
D) \[\frac{1}{5}\]
Correct Answer: B
Solution :
[b] \[F=G\frac{m\left( M-m \right)}{{{r}^{2}}}\] For maximum value of F,\[dF/dm=0\] and so m=M/2.
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