Kinematics Question 238

Question: Two balls are dropped from heights $ h $ and $ 2h $ respectively from the earth surface. The ratio of time of these balls to reach the earth it’s [CPMT 2003]

Options:

A) $ 1:\sqrt{2} $

B) $ \sqrt{2} $ : 1

C) 2 : 1

D) 1 : 4

Show Answer

Answer:

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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