Question

The temperature of an isotropic cubical solid of length L, density $\rho$, and coefficient of linear expansion $\alpha$ per kelvin is raised by ${10}^{0}C$. Then at this temperature to a good approximation.

• A. Length is L ($1+10\alpha$)
• B. Total surface area is $L^2(1+20\alpha )$
• C. Volume is $L^3(1+30\alpha )$
• D. Density is $\frac{\rho }{1+30\alpha }$

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A Length is L ($1+10\alpha$)
B Total surface area is $L^2(1+20\alpha )$
C Volume is $L^3(1+30\alpha )$
D Density is $\frac{\rho }{1+30\alpha }$