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