The value of coefficient of volume expansion of glycerin is 5 × 10–4 K–1. The fractional change in the density of glycerin for a rise of 40°C in its temperature is :
Answer & explanation
Correct answer: option 3
\( \frac{\Delta \rho}{\rho} = \gamma \Delta T \)
\( \gamma = 5 × 10^{-4} K^{-1} ; \Delta T = 40°C \)
\( \frac{\Delta \rho}{\rho} = 0.02 \)