Is there any connection between object's feeling hot or cold and its thermal conductivity ?

Three identical metal rods A , B and C are placed end to end and a temperature difference is maintained between the free ends of A and C . If the thermal conductivity of B(K_(B)) is thrice that of C(K_(C )) and half that of A(K_(A)) , (K_(A)=49w//mK) calculate the effective thermal conductivity of the system ?

Temperature of hot end and cold end of a rod, which is in steady state are 100^(@)C and 40^(@)C respectively. The area of cross section of rod and its thermal conductivity are uniform. The temperature of rod at its mid point is (Assume no heat loss thorugh lateral surface)

A thermal conductor is heated at one end. What is the theoretical value of its thermal conductivity in order that the other end also attains the same temperature?

On a cold winter dry, the temperature of atmosphere is -T^(@)C . The cylindrical dram shown is made of insultating material and it contains water at 0^(@)C . If L is latent heat of fusion of ice, rho is density of ice and K_(R) is thermal conductivity of ice, the time taken for total mass of water to freeze is

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)

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)

A: The thermal conductivity of a body depends on its material and dimensions. R: Thermal conductivity is proportional to length and inversely proportional to area cross-section of body.

A wall consists of alternating blocks withlength 'd' and coefficient of thermal conductivity k_(1) and k_(2) . The cross sectional area of the blocks are the same. The equivalent coefficient of thermal conductivity of the wall between left and right is:-

If the temperature difference on the two sides of a wall increases from 100^@C to 200^@C , its thermal conductivity

Two rectangular blocks, having identical dimensions, an be arranged either in configuration-I or in configuration-II as shown in the figure. One of the blocks has thermal conductivity k and the other 2k. The temperature difference between the ends along the x-axis is the same in both the configurations. It takes 9s to transport a certain amount of heat from the hot end to the cold end in the configuration-I. The time to transport the same amount of heat in the configuration-II is