An open-ended U-tube of uniform cross-sectional area contains water (density $$10^{3}kg m^{−3}$$). Initially the water level stands at 0.29 m from the bottom in each arm. Kerosene oil (a water-immiscible liquid) of density 800 kg$$ m^{−3}$$ is added to the left arm until its length is 0.1 m, as shown in the schematic figure below. The ratio $$\left(\frac{ℎ1}{ℎ2}\right)$$ of the heights of the liquid in the two arms is