A circular disc of copper has a symmetrical hole at its center. The disc is uniformly heated. The diameter of the hole will?
A. Increase
B. Decrease
C. Remain the some
D. None of these
Answer:A
A circular disc of copper has a symmetrical hole at its center. The disc is uniformly heated. The diameter of the hole will?
A. Increase B. Decrease C. Remain the some D. None of these