Physics - Heat & Thermo Question with Solution | TestHub

The rod is in static equilibrium, so the force of compression is the SAME at every cross-section → statement (A) is incorrect.

Thermal stress = F/A; with the same force, stress is maximum where the area is minimum (left end) → (B) is correct and (D) is incorrect.

Although net elongation is zero, thermal strain is cancelled by mechanical compressive strain - stress and strain ARE induced → statement (C) is incorrect.

Incorrect statements: (A), (C) and (D).