Answer: 3 cm3.
- A 1 cm3
- B 2 cm3
- C 3 cm3
- D 6 cm3
Correct answer: C. 3 cm3
Explanation: γ = 3α = 6×10-5; ΔV = γVΔT = 6×10-5 × 1000 × 50 = 3 cm3.
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.