Two metal rods A and B of equal lengths and equal cross- sectional areas are joined end to end. The coefficients of thermal conductivities of A and B are in ratio 2 : 3 , when the free end of A is maintained at `100^(@)C`, free end of B at `0^(@)C`, the temperature of the junction is

Three rods A, B and C of the same length and same cross-sectional area are joined as shown. Their thermal conductivities are in the ratio 1:2:3/2. If the open ends of A and C are at 200^@ C and 18^@ C, respectively, then the temperature at the junction of A at steady state is

Three rods A, B and C of the same length and cross- sectional area are joined in series as shown. The temperature at the junction of A and B , in equilibriu, is

Two rods having thermal conductivity in the ratio of 5 : 3 having equal lengths and equal cross-sectional area are joined by face to face. If the temperature of the free end of the first rod is 100^(@)C and free end of the second rod is 20^(@)C . Then temperature of the junction is

Two rods of same length and cross section are joined along the length. Thermal conductivities of first and second rod are K_1 and K_2 . The temperature of the free ends of the first and second rods are maintained at θ_1 and θ_2 respectively. The temperature of the common junction is

Two rods of similar area of cross section and length are joined as shown in the figure. The ratio of their thermal conductivity is 2:3. The free ends are maintained at 100^(@)C and 0^(@)C respectivley. THE temperature at junction in steady state is

Two rods of similar area of cross section and length are joined as shown in the figure. The ratio of their thermal conductivity is 2:3. The free ends are maintained at 100^(@)C and 0^(@)C respectivley. THE temperature at junction in steady state is

A , B and C are the three identical conductors but made from different materials . They are kept in contact as shown . Their thermal conductivities are K , 2K and (K)/(2) . The free end of A is at 100^(@) C and the free end of C is at 0^(@)C . During steady state , the temperature of the junction of A and B is nearly .... ""^(@) C .

Two rods of same length and cross section are joined along the length. Thermal conductivities of first and second rod are K_(1) and K_(2) . The temperature of the free ends of the first and seconds rods are maintained at theta_(1) and theta_(2) respectively. The temperature of the common junction is

The end A of rod AB of length 1 m is maintained at 80^(@) C and the end B at 0^(@) C. The temperature at a distance of 60 cm from the end A is