Speed of efflux of a liquid from a pressure difference

1. A.
   $\sqrt{\frac{3H}{\rho}}$
2. B.
   $\sqrt{\frac{5H}{\rho}}$
3. C.
   $\sqrt{\frac{6H}{\rho}}$
4. D.
   $\sqrt{\frac{9H}{\rho}}$

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1. A.
   $\left(\frac{4P_1-P_2}{\rho}\right)^{1/2}$
2. B.
   $\left(\frac{4P_2-P_1}{\rho}\right)^{1/2}$
3. C.
   $\left(\frac{2(P_1-P_2)}{\rho}\right)^{1/2}$
4. D.
   $\left(\frac{2(P_2-P_1)}{\rho}\right)^{1/2}$

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1. A.
   $\left[\dfrac{(P_1 - P_2)}{\varrho}\right]^{\frac{1}{2}}$
2. B.
   $\left[\dfrac{2(P_1 - P_2)}{\varrho}\right]^{\frac{1}{2}}$
3. C.
   $\left[\dfrac{(P_2 - P_1)}{\varrho}\right]^{\frac{1}{2}}$
4. D.
   $\left[\dfrac{2(P_2 - P_1)}{\varrho}\right]^{\frac{1}{2}}$

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1. A.
   $\left(\dfrac{6H}{\rho}\right)^{\frac{1}{2}}$
2. B.
   $\left(\dfrac{H}{\rho}\right)^{\frac{1}{2}}$
3. C.
   $\left(\dfrac{3H}{\rho}\right)^{\frac{1}{2}}$
4. D.
   $\left(\dfrac{5H}{\rho}\right)^{\frac{1}{2}}$

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