Question

A tank is filled to a depth of 4.25 m with water. There is a small hole in the side of the tank 3 m about bottom. If $g=10m{s}^{-2}$, the speed with which the water emerges from the hole is:

• A. $5m{s}^{-1}$
• B. $2.5m{s}^{-1}$
• C. $1.25m{s}^{-1}$
• D. $12.5m{s}^{-1}$

Answer 1

Answer: (A)

$5m{s}^{-1}$

$\text{We know that}$

$v=\sqrt{2gh}$

$h=4.25-3.=1.25$

$v=\sqrt{2\times 10\times 1.25}$

$=5m/s$

$\text{Ans :}-\left(A\right)$