Question

The density of a substance at $0^{o}C$ is 10 g/cc and at ${100}^{o}C$, its density is 9.7 g/cc. The coefficient of volume expansion of the substance is

• A. $2\times {10}^{-2}$
• B. $3\times {10}^{-4}$
• C. $4\times {10}^{-6}$
• D. $6\times {10}^{-3}$

Answer 1

Answer: (B)

$3\times {10}^{-4}$

Coefficient of volume expansion $\gamma =\frac{\Delta p}{p\Delta T}=\frac{p_1-p_2}{p\left(\Delta \theta \right)}$ $=\frac{10-9.7}{10\times (100-0)}=3\times {10}^{-4}$