For a class demonstration, a physics instructor uniformly heats a metallic strip held horizontally. It bends upward. The coefficient of linear expansion of the metal on top is ... that of the metal on

Question

For a class demonstration, a physics instructor uniformly heats a metallic strip held horizontally. It bends upward. The coefficient of linear expansion of the metal on top is ... that of the metal on the bottom.

TestHub · Accepted Answer

An upward-bending strip has the shorter layer on top. That layer expands less. Its coefficient is smaller than the bottom layer's.

Physics - Heat & Thermo Question with Solution | TestHub

Options:

Doubts & Discussion