The limbs of a $U$ -tube glass are lowered into vessels $A$ and $B, A$ containing water. Some air is pumped out through the top of the tube $C$. The liquids in the left hand limb $A$ and the right hand limb $B$ rise to heights of $10\, cm$ and $12\, cm$ respectively. The density of liquid $B$ is ........ $g/cm^3$
The limbs of a $U$ -tube glass are lowered into vessels $A$ and $B, A$ containing water. Some air is pumped out through the top of the tube $C$. The liquids in the left hand limb $A$ and the right hand limb $B$ rise to heights of $10\, cm$ and $12\, cm$ respectively. The density of liquid $B$ is ........ $g/cm^3$
- A
$0.75$
- B
$0.83$
- C
$1.2$
- D
$0.25$
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- [IIT 2006]
$A U-$ tube having horizontal arm of length $20$ $cm$, has uniform cross-sectional area $=1\ cm^2$. It is filled with water of volume $60$ $cc$. What volume of a liquid of density $4$ $g/cc$ should be poured from one side into the $U -$ tube so that no water is left in the horizontal arm of the tube ........ $cc$ ?
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