The temperature difference between the two ends of a bar 1.0 m long is 50^(@)C and that for the other bar 1.25 m long 75^(@)C. Both the bars have same area of cross-section. If the rates of conduction of heat in the two bars are the same, find the ratio of the coefficients of thermal conductivity of the materials of the two bars.

The temperature difference between the two ends of a bar 1.0 m long is

1.	The temperature difference between the two ends of a bar 1.0 m long is 50^(@)C and that for the other bar 1.25 m long 75^(@)C. Both the bars have same area of cross-section. If the rates of conduction of heat in the two bars are the same, find the ratio of the coefficients of thermal conductivity of the materials of the two bars.
Answer» ANSWER :`6:5`