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 ……
A. 1 : 2
B. 2 : 3
C. 3 : 4
D. 4 : 3
Answer:A
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 ……
A. 1 : 2 B. 2 : 3 C. 3 : 4 D. 4 : 3