Question

one end of the long rod is inserted in the furnace with the other end projecting outside the air. after steady state is reached, the temperature of the rod is maintained at two points 10 cm apart and found to be 130 c and 90 c, when the ambient temperature is 30 c. what is thermal conductivity of the rod.

Answer 1

To find the thermal conductivity of the rod, use the formula: k = (Q * L) / (A * deltaT), where k is the thermal conductivity, Q is the rate of heat conduction, L is the distance between the two points, A is the cross-sectional area, and deltaT is the temperature difference.

To find the thermal conductivity of the rod, we can use the formula:

k = (Q * L) / (A * deltaT)

Where k is the thermal conductivity of the rod, Q is the rate of heat conduction, L is the distance between the two points where the temperatures are measured, A is the cross-sectional area of the rod, and deltaT is the temperature difference between the two points.

Using the given temperatures and distance, we can calculate the temperature difference and plug the values into the formula to find the thermal conductivity of the rod.