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Q: If a composite bar of steel and copper is heated, then the copper bar will be under:
  • A. Tension
  • B. Shear
  • C. Torsion
  • D. None of these
Correct Answer: Option D - If a composite bar of steel and copper is heated, then steel is less expand then due to this copper bar will be under compression and steel will be under tension due to more expansion of copper.
D. If a composite bar of steel and copper is heated, then steel is less expand then due to this copper bar will be under compression and steel will be under tension due to more expansion of copper.

Explanations:

If a composite bar of steel and copper is heated, then steel is less expand then due to this copper bar will be under compression and steel will be under tension due to more expansion of copper.