A) 16
B) 8
C) 64
D) 6.4
Correct Answer: A
Solution :
\[{{M}_{1}}=64\]; \[{{r}_{2}}=2{{r}_{1}}\] \[{{M}_{2}}={{M}_{1}}{{\left[ \frac{{{r}_{1}}}{{{r}_{2}}} \right]}^{2}}=64\times \frac{1}{4}=16\]
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