Equal volumes of two immiscible liquids of densities $\rho$ and $2\rho$ are filled in a vessel as shown in figure. Two small holes are punched at depth $h/ 2$ and $3h/2$ from the surface of lighter liquid. If $v_1 $ and $v_2 $ are the velocities of a flux at these two holes, then $v_1/v_2 $ is :
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