Question

A water tank standing on the floor has two small holes vertically one above the other punched on one side. The holes are $h_1$ cm and $h_2$ cm above the floor. How high does water stand in the tank when the jets from the holes hit the floor at the same point ?

• A. $(h_2-h_1)$
• B. $h_2+h_1$
• C. $(h_2\,^2-h_1\,^2)$
• D. $\frac{h_2}{h_2-h_1}$

Answer 1

Answer: (B)

$h_2+h_1$

Answer 2

$R_1 = R_2$ $\Rightarrow$ $\sqrt{2g(H - h_1)} \sqrt{\frac{2h_1}{g}} = \sqrt{2g (H - h_2)} \sqrt{\frac{2h_2}{g}}$