question_answer

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

A)  1 : 2                                      

B)  2 : 3

C)  3 : 4                                      

D)  4 : 3