Two metal rods A and B are having their initial lengths in the ratio 2:3, and coefficients of linear expansion in the ratio 3:4. When they are heated through same temperature difference the ratio of their linear expansions is …………….. .

Two metal rods A and B are having their initial lengths in the ratio 2

1.	Two metal rods A and B are having their initial lengths in the ratio 2:3, and coefficients of linear expansion in the ratio 3:4. When they are heated through same temperature difference the ratio of their linear expansions is …………….. .
Answer» `1:2` `2:3` `3:4` `4:3` SOLUTION :`Deltal_(A)=l_(A)alpha_(A)Deltat, Deltal_(B)=l_(B)alpha_(B)Deltat` `(Deltal_(A))/(Deltal_(B))=(l_(A)alpha_(A))/(l_(B)alpha_(B))=(2)/(3)xx()/(4)=(1)/(2)rArr Deltal_(A):Deltal_(B)=1:2`