The lengths,radii of cross- section and thermal conductivities of two rods A and B are all in the ratio 2:3. When the ends of A and B are maintained at the same different of temperature,the ratio of the rate of flow of heat in A to that in B is

The end of two rods of different materials with their thermal conductivities, area of cross-section and lengths all in the ratio 1:2 are maintained at the same temperature difference. If the rate of flow of heat in the first rod is 4 cal//s . Then, in the second rod rate of heat flow in cal//s will be

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

Which of the following cylindrical rods will conduct most heat, when their ends are maintained at the same steady temperature

Four identical rods AB, CD, CF and DE are joined as shown in figure. The length, cross-sectional area and thermal conductivity of each rod are l, A and K respectively. The ends A, E and F are maintained at temperature T_(1) , T_(2) and T_(3) respectively. Assuming no loss of heat to the atmosphere, find the temperature at B.

Four identical rods AB, CD, CF and DE are joined as shown in figure. The length, cross-sectional area and thermal conductivity of each rod are l, A and K respectively. The ends A, E and F are maintained at temperature T_(1) , T_(2) and T_(3) respectively. Assuming no loss of heat to the atmosphere, find the temperature at B .

Rate of heat flow through two conducting rods of identical dimensions having thermal conductivities K_(1) and K_(2) and Q_(1) and Q_(2) when their ends are maintained at the same difference of temperature individually. When the two rods are joined in series with their ends maintained at the same temperature difference (as shown in the figure), the rate of heat flow will be

Heat is flowing through two cylindrical rods of the same material . The diameters of the rods are in the ratio 1:2 and the lengths in the ratio 2:1.If the temperature difference between the ends be the same ,then the ratio of the rate of flow if heat through them will be ?

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

Heat is flowing through two cylindrical rods of the same material. The diamters of the rods are in the ratio 1: 2 and the length in the ratio 2 : 1 . If the temperature difference between the ends is same then ratio of the rate of flow of heat through them will be

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.