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An open-ended U-tube of uniform cross-sectional area contains water. Initially the water stands at 29cm from the bottom in each arm. Kerosene oil of density 800kg/m^3 is added to the left arm until its length is 0.1m. The ratio h1/h2=?
a) 15/14
b) 35/33
c) 7/6
d) 5/4

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