Figure shows elongation versus temperature for two different materials If these metals be employed to form a bimetallic strip of

Question

Figure shows elongation versus temperature for two different materials If these metals be employed to form a bimetallic strip of thick ness 6cm and heated it bends into an arc the radius of curvature changes with temperature as shown The linear expansivity of the metals are Elongation 1 2 3 4 Temperature C 1 8x10 6 C 3 6x10 6 C Radious of curvature m 50 Temperature C 2 2x10 6 C 4 3x10 6 C

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