Question

A stream of water escapes from a hole $2m$ above the base of a tank and strikes the ground at a horizontal distance of $6m$. The depth of the hole from the free surface of water is

• A. $4m$
• B. $4.5m$
• C. $9m$
• D. $6m$

Answer 1

Answer: (B)

$4.5m$

$H=\text{height of Beaker}$

$h=\text{height of hole from Bottom}$

$R=6m$

$\text{We know that}$

$R=\sqrt{4h(H-h)}$

$6=\sqrt{4\times 2(H-2)}$

$36=8(H-2)$

$(H-2)=4.5$

height of hole from

Surface $=4.5m$

Answer:-(B)