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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 h of the water column.
.

A

27 cm

B

30 cm

C

35 cm

D

40 cm

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The correct Answer is:
A
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