A) \[1:\sqrt{2}\]
B) \[\sqrt{2}\] : 1
C) 2 : 1
D) 1 : 4
Correct Answer: A
Solution :
\[t=\sqrt{\frac{2h}{g}}\Rightarrow \frac{{{t}_{1}}}{{{t}_{2}}}=\sqrt{\frac{{{h}_{1}}}{{{h}_{2}}}}=\sqrt{\frac{1}{2}}=\frac{1}{\sqrt{2}}\]
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