Topic: Strength of Materials
If a material expands freely due to heating it will develop
- A. Thermal stresses
- B. Tensile stress
- C. No stress
- D. Bending
Answer: C. No stress
Explanation: If a material expands freely due to heating, there are no internal resisting forces created, hence it will develop zero stress. Thermal stresses only develop when the material's expansion or contraction is restricted.