A) 1 : 1
B) 4 : 1
C) 1 : 4
D) 2 : 1
Correct Answer: A
Solution :
\[\frac{{{Q}_{1}}}{{{Q}_{2}}}=\frac{r_{1}^{2}T_{1}^{4}}{r_{2}^{2}T_{2}^{4}}\]\[=\frac{{{4}^{2}}}{{{1}^{2}}}\times {{\left( \frac{2000}{4000} \right)}^{4}}=1\]
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