Which statement about the relation between thermal expansion and heat capacity of a solid is most correct? Statement I: α is strictly proportional to specific heat for all substances. Statement II: Fo

Question

Which statement about the relation between thermal expansion and heat capacity of a solid is most correct?

Statement I: $α$ is strictly proportional to specific heat for all substances.

Statement II: For one solid, $α_{V} = γ_{G} κ_{T} C_{V} / V$ so $α$ follows $C_{V}$ with temperature, but the proportionality constant differs from material to material.

TestHub · Accepted Answer

The Gruneisen relation links volume expansion to C V ​ through γ G ​ and compressibility. So for the same solid the two vary together with temperature (both go to zero at low T ), but the factor γ G ​ κ T ​ / V is not universal. Statement I is false and Statement II true. Correct option: (C).

Physics - Heat & Thermo Question with Solution | TestHub

Options:

Doubts & Discussion