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Question

A U- tube contains water and methyllated spirit separated by mercury. The mercury columns in the two arms are in level with 10.0 cm of water in one arm and 12.5 cm of spirit in the other. What is the specific gravity of spirit ?

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Solution

REF.Image
as mercury is at same level, pressure exerted by water and spirit
along AB should be same. [P= hpg]
h1p1g=h2p2g
1 water
2 spirit
p2=h1p1h2 for water, p1=1g/cc
=10×112.5=0.8g/cc

1102753_1174337_ans_7d041f7bf90f4543aef061ec4ac9d3dc.JPG

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