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The liquids shown in figure in the two a...

The liquids shown in figure in the two arms are mercury (specific gravity =13.6) and water. If the difference of heights of the mercury columns is 2 cm, find the height of the water column.
,

Text Solution

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The correct Answer is:
B, C
Suppose the atmospheric pressure `=p_(0).`
Pressure at `A=p_(0)+h(1000kgm^(-3))g`
pressure at `B=p_(0)+(0.02m)(13600 kgm^(-3))g`
These pressure are equal as A and B which are at the same horizontal level. Thus,
`h=(0.02m)xx13.6`
`=0.27m=27cm`.
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