Three metal rod A, B and C of same length and cross-section 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 twice that of `C(K_C)` and half that of `A(K_A)`, then the effective thermal conductivity of the system will be

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 twice that of C(K_(C )) and half that of A(K_(A)) , (K_(A)=49w//mK) calculate the effective thermal conductivity of the system ?

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 ?

Three identical rods A, B and C are placed end to end. A temperature difference is maintained between the free ends of A and C. The thermal conductitvity of B is thrice that of C and half that of A. The effective thermal conductivity of rod A)

Three identical rods A,B and C are placed end to end. A temperature difference is maintained between the free ends of A and C. The thermal conductivity of B is thrice that of C and half of that of A. The effective thermal conductivity of the system is ........... ( K_A is the thermal conductivity of rod A).

Two conducting rods A and B of same length and cross-sectional area are connected (i) In series (ii) In parallel as shown. In both combination a temperature difference of 100° C is maintained. If thermal conductivity of A is 3 K and that of B is K then the ratio of heat current flowing in parallel combination to that flowing in series combination is

Two rods A and B of same area of cross-section are joined together end to end The free end of the rod A is kept in melting ice at 300 K and free end of B rod at 400 K. The rods are of the same length. The conductivity of A is 3 times that of B. Calculate the temperature of the junction of the rods.

Two rods of length l and 2l thermal conductivities 2K and K are connected end to end. If cross sectional areas of two rods are eual, then equivalent thermal conductivity of the system is .