Two rods of different materials having coefficients of thermal expansion α1 and α2 and Young's modulii Y1 and Y2 are fixed between two rigid and massive walls. The rods are heated to the same temperature. If there is no bending of the rods, the thermal stresses developed in them are equal provided

Two rods of different materials having coefficients of thermal expansi

1.	Two rods of different materials having coefficients of thermal expansion α1 and α2 and Young's modulii Y1 and Y2 are fixed between two rigid and massive walls. The rods are heated to the same temperature. If there is no bending of the rods, the thermal stresses developed in them are equal provided
Answer» Two rods of different materials having coefficients of thermal expansion $α_{1}$ and $α_{2}$ and Young's modulii $Y_{1}$ and $Y_{2}$ are fixed between two rigid and massive walls. The rods are heated to the same temperature. If there is no bending of the rods, the thermal stresses developed in them are equal provided

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