The coefficient of thermal expansion relates: A Stress to temperature B Change in length to temperature change: ΔL = αLΔT C Pressure to temperature D Conductivity to temperature ✓ Correct Answer: Option B α = (ΔL/L)/ΔT. Thermal strain = αΔT. Larger α means more expansion per degree. Practice FE Exam Prep Quizzes → Browse All Questions Study Flashcards