Do Two Glued Metal Bars Bend Identically Due to Identical Thermal Coefficients?

[cuttooth]

Homework Statement

There is a picture of two metal bars that are glued together of equal length (doesn't specify the type of metals). At 0 degrees C, they are not bent. At 20 degrees C, they are both equally bent (still attached together, bent the same way). Do they have the same or different thermal coefficients?

Homework Equations

No equations really required for this question - it's conceptual.

The Attempt at a Solution

My guess is that they have the same thermal coefficient. I just want to make sure. Thanks!

 

[rock.freak667]

The Attempt at a Solution

My guess is that they have the same thermal coefficient. I just want to make sure. Thanks!

Yes, they will have the same coefficient, since the lengths are the same.

ΔL=Lα(ΔT)