Densities of a liquid at 30°C and 80°C are 0.6gm/c.c and 0.54 gm/c.c. The coefficient of real expansion of liquid is

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Densities of a liquid at 30°C and 80°C are 0.6gm/c.c and 0.54 gm/c.c. The coefficient of real expansion of liquid is

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0.0002/°C

0.0001/°C

0.002/°C

0.001/°C

answer is B.

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Detailed Solution

$γ_{R} = \frac{1}{ΔT} [\frac{ρ_{30} - ρ_{80}}{ρ_{80}}] = \frac{1}{50} [\frac{0.6 - 0.54}{0.54}]$

$\Rightarrow γ_{R} = 0.002 / {}^{\circ}C$

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