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Consider a tank containing a liquid of density \( \rho \) with a small hole in its side at a height \( \mathrm{y}_{1} \) from
\( \mathrm{P} \) the bottom. The air above the liquid, whose

W surface is at height \( \mathrm{y}_{2} \), is at pressure \( \mathrm{P} \). The velocity of fluid at \( A_{1} \) is :-
(1) \( \sqrt{2 \mathrm{gh}+2\left(\mathrm{P}-\mathrm{P}_{\mathrm{a}}\right)} \)
(2) \( \sqrt{2 \mathrm{gh}+\left(\mathrm{P}-\mathrm{P}_{\mathrm{a}}\right)} \)
(3) \( \sqrt{2 g h+\frac{2\left(P-P_{a}\right)}{\rho}} \)
(4) \( \sqrt{\operatorname{gh}+\frac{\left(\mathrm{P}-\mathrm{P}_{\mathrm{a}}\right)}{\rho}} \)
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