thermal conductivity

Statement I: Two solid cylindrical rods of identical size and different thermal conductivity K_1 and K_2 are connected in series. Then the equivalent thermal conductivity of two rods system is less than that value of thermal conductivity of either rod. Statement II: For two cylindrical rods of identical size and different thermal conductivity K_1 and K_2 connected in series, the equivalent thermal conductivity K is given by (2)/(K)=(1)/(K_1)+(1)/(K_2)

In the Ingen hausz method to compare the thermal conductivities of differnet substances the length upto which wax melted in copper and zinc rods are 9.3 cm and 5cm respectively Compare their thermal conductivities .

The temperature across two different slabs A and B are shown I the steady state (as shown Fig) The ratio of thermal conductivities of A and B is

Explain the following in reference to thermal conduction in a rod: Isothermal surface

Explain the following in reference to thermal conduction in a rod: Steady state

Explain the following in reference to thermal conduction in a rod: Temperature gradient.

Thermal conduction

Define thermal conduction. Briefly explain its molecular mechanism.

Define thermal conduction and convection. How are these modes of transfer different from thermal radiation ?

What do you mean by variable state and steady state in thermal conduction ? Define temperature gradient