Question

In a vertical U tube containing a liquid, two arms are maintained at different temperature 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 ? a} l1-l2 / l2t1-l1t2 b} l1-l2 / l1t1- l2t2 c} l1+l2 /l2t1-l1t2 d} l1+l2/ l1t1+l2t2

Answer 1

b......................