Physics-
General
Easy
Question
In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures, t1 and t2. The liquid columns in the two arms have heights l1 and l2 respectively. The coefficient of volume expansion of the liquid is equal to
The correct answer is:
Let r0, r1 and r2 be the densities of the liquid at temperatures 0, t1 and t2 respectively
To balance pressure, r1l1g = r2l2g
or 
Þ 
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=
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