Q. The value of coefficient of volume expansion of glycerin is $5 \times 10^{-4}$ $K^{-1}$. The fractional change in the density of glycerin for a rise of 40°C in its temperature, is :
A) 0.010
B) 0.015
C) 0.020
D) 0.025
Explanation
[Solution] $\frac{\Delta\rho}{\rho} \approx \gamma\Delta T = 5\times10^{-4} \times 40 = 0.020$. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.