Question

Water drops falls from a tap at an interval of $2\text{second}$. Find out the position of $1^{st}$ drop when $6^{th}$ drop just leaves

• A. $125\text{m}$
• B. $250\text{m}$
• C. $500\text{m}$
• D. $625\text{m}$

Answer 1

The correct option is C $500\text{m}$

If we consider the first drop leaves the tap at $0\text{sec}$, then the time of travel of the first drop when sixth drop leaves the tap will be $10\text{seconds}$.
As we know that for free fall
$t=\sqrt{\frac{2h}{g}}$
$\Rightarrow h=\frac{1}{2}g{t}^2=\frac{1}{2}\times 10\times {10}^2$
$\Rightarrow h=500\text{m}$