Three conducting rods of same material and cross-section are shown in figure. Temperatures of A,D and C are maintained at `20^(@)C, 90^(@)C and 0^(@)C`. The ratio of lengths BD and BC if there is no heat flow in AB is

Three conducting rods of same material and cross-section are showm in Fig .7(CF).22. Temperatures of A, D and C are maintained at 20^(@)C, 90^(@)C and 0^(@)C . The ratio of the lengths of BC and BD, if there is no flow in AB, is

Three conducting rods AB, BC and BO made of same material and same cross section are arranged as shown in the figure. Temperatures at the points A, O and C are maintained at 20^(0)C, 90^(0) C and 0^(0) C respectively. The ratio of lengths of BO to BC when there is no beat flow in AB, is

Two rods of same material and thickness are joined as shown below. The ends X and Y are maintained at X^(@)C and Y^(@)C respectively. The ratio of the heat flow in the two rods is –

Three rods of same material and having the same cross-section are joined as shown in the figure.The tremperature of junction of three rods is : .

Two rods (one semi-circular and other straight) of same material and of same cross-sectional area are joined as shown in the figure. The points A and B are maintained at different temperature. The ratio of the heat transferred through a cross-section of a semi-circular rod to the heat transferred through a cross section of the straight red in a given time is

In the figure ABC is a conducting rod whose lateral surfaces are insulated. The length of the section AB is one-half of that of BC, and the respective thermal conductivities of the two sections are as given in the figure. If the ends A and C are maintained at 0^(@)C and 70^(@)C respectively, the temperature of junction B in the steady state is

In the figure ABC is a conducting rod whose lateral surfaces are insulated. The length of the section AB is one-half of that of BC, and the respective thermal conductivities of the two sections are as given in the figure. If the ends A and C are maintained at 0^(@)C and 70^(@)C respectively, the temperature of junction B in the steady state is

Two rods (one semi-circular and other straight) of same material and of same cross-sectional area are joined as shown in the figure. The point A and B are maintained at different temperature. Find the ratio of the heat transferred through a cross-section of a semi-circular rod to the heat transferred through a cross section of the straight rod in a given time.

Two rods (one semi-circular and other straight) of same material and of same cross-sectional area are joined as shown in the figure. The point A and B are maintained at different temperature. Find the ratio of the heat transferred through a cross-section of a semi-circular rod to the heat transferred through a cross section of the straight rod in a given time.