Advanced Solids MixedHardQuestion 6380
Question
A rod (Y=10¹¹ Pa, α=10⁻⁵/°C, L=1 m) has both ends fixed. Temperature increases by 20°C. Thermal strain:
- A2×10⁻⁴Correct
- B2×10⁻³
- C2×10⁻⁵
- D2×10⁻⁶
Correct answer
2×10⁻⁴
Explanation
Thermal strain = αΔT = 10⁻⁵×20 = 2×10⁻⁴.