A vertical U-tube of uniform cross-section contains mercury. Through one of its limbs, some water is poured such that the mercury level in that limb goes down by 2 cm. What will be the height of the water column?
Text Solution
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Let the height of the water column be h. If the mercury level falls down by 2 cm in one limb, then it will rise by 2 cm in the other limb. AC = 2 cm, BE = 2 cm `therefore" "` DE = 2 + 2 = 4 cm Now, pressure at point C = pressure at point D `therefore" "hxx1xxg=4xx13.6xxgor,h=54.4cm`.
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