Two rods A and B are of equal lengths. Their ends are kept at the same temperature difference and their area of cross - sections are A_(1) and A_(2) and thermal conductivities k_(1) and k_(2). The rate of heat transmission in two rods will be equal, if. . . .. . .

Two rods A and B are of equal lengths. Their ends are kept at the same

1.	Two rods A and B are of equal lengths. Their ends are kept at the same temperature difference and their area of cross - sections are A_(1) and A_(2) and thermal conductivities k_(1) and k_(2). The rate of heat transmission in two rods will be equal, if. . . .. . .
Answer» `k_(1)A_(2)=k_(2)A_(1)` `k_(1)A_(1)=k_(2)A_(2)` `k_(1)=k_(2)` `k_(1)A_(1)^(2)=k_(2)A_(2)^(2)` Solution :`H_(1)=H_(2)` `:.k_(1)A_(1)((T_(1)-T_(2))/(L))=k_(2)A_(2)((T_(1)-T_(2))/(L))` `:.k_(1)A_(1)=k_(2)A_(2)`