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A body is floating in a liquid. At two temperatures $ t_1^{\circ}C\: and \: t_2^{\circ}C$ of the liquid, fractions $f_1 \: and \: f_2 $ of the volumes of the body remain immersed in the liquid. Coefficient of volume expansion of the liquid is

$\begin {array} {1 1} (1)\;\large\frac{f_1-f_2}{f_2t_1-f_1t_2} & \quad (2)\;\large\frac{f_1+f_2}{f_1t_1+f_2t_2} \\ (3)\;\large\frac{f_1+f_2}{f_2t_1+f_1t_2} & \quad (4)\;\large\frac{f_1-f_2}{f_1t_1-f_2t_2} \end {array}$

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(1) $ \large\frac{f_1-f_2}{f_2t_1-f_1t_2}$
answered Nov 7, 2013 by pady_1

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