Question

The SI unit for the coefficients of cubical expansion is

• A. ${}^o$C
• B. ${}^o{C}^{-1}$
• C. cm/${}^o$C
• D. None of these

Answer 1

Answer: (B)

${}^o{C}^{-1}$

Coefficient of cubical expansion is the fraction of volume increased when a body is heated. Its the property of the material.

$\gamma =\left(\Delta V/V\right)/\Delta T$

Unit of $\gamma$ is ${}^O{C}^{-1}$.