Answer: γ = 3α.
- A γ = 3α
- B γ = α
- C γ = 2α
- D γ = α/3
Correct answer: A. γ = 3α
Explanation: For an isotropic solid, γ = 3α.
During a phase change (melting or boiling), temperature stays constant while heat is absorbed entirely as latent heat (Q=mL); temperature only rises again once the substance is fully in its new phase.
Concept context
Temperature scales, thermal expansion, calorimetry, and the three modes of heat transfer including radiation laws.