(Solved): In the linear heat conduction experiment, the cause of the difference in temperature gradients in th ...

In the linear heat conduction experiment, the cause of the difference in temperature gradients in the below graph is: Select one: a. the air gap between T3 and T6 causes a higher conductivity than that of the brass bar b. the difference in materials between the upper part and the lower part of the unit c. the difference in diameter between the upper part and the lower part of the unit d. the heat loss from the whole insulation of the specimen