Fig. (1) shows the graphs of elongation versus temperature for two different metals. If these metals be employed to form a straight bimetallic strip of thickness 6cm and heated it bends in the form ofan arc, the radius of curvature changing with temperature approximately as shown in fig(2). The linear expansivities of the two metals are

Fig. (1) shows the graphs of elongation versus temperature for two dif

1.	Fig. (1) shows the graphs of elongation versus temperature for two different metals. If these metals be employed to form a straight bimetallic strip of thickness 6cm and heated it bends in the form ofan arc, the radius of curvature changing with temperature approximately as shown in fig(2). The linear expansivities of the two metals are
Answer» `24 xx 10^(-6) //°C and 12 xx 10^(-6)//°C` `20 xx 10^(-6)//°C and 10 xx 10^(-6)//°C` `18 xx 10^(-6)//°C and 10^(-6)//°C` `16 xx 10^(-6)//°C and 8 xx 10^(-6)//°C` Answer :D