Two sheets of thickness d and 2d and same area are touching each other on their face. Temperature `T_(A),T_(B),T_(C)` shown are in geometric progression with common ratio r = 2. Then ratio of thermal conductivity of thinner and thicker sheet are

Two sheets of thickness d and 3d and of same area are joined together. Temperature T_(A), T_(B), T_(C ) shown in the figure are in geometric progression with common ration r = 3 . Then ratio of thermal conductivity of thinner to thicker sheet is

Two sheets of thickness d and 3d, are touching each other. The temperature just outside the thinner sheet is T_1 and on the side of the thicker sheet is T_3 . The interface temperature is T_2. T_1, T_2 and T_3 are in arithmetic progression. The ratio of thermal conductivity of thinner sheet to thicker sheet is .

Two sheets of thickness d and 3d, are touching each other. The temperature just outside the thinner sheet is T_1 and on the side of the thicker sheet is T_3 . The interface temperature is T_2. T_1, T_2 and T_3 are in arithmetic progression. The ratio of thermal conductivity of thinner sheet to thicker sheet is .

Two sheets of thickness d and 3d, are touching each other. The temperature just outside the thinner sheet is T_1 and on the side of the thicker sheet is T_3 . The interface temperature is T_2. T_1, T_2 and T_3 are in arithmetic progression. The ratio of thermal conductivity of thinner sheet to thicker sheet is .

Two sheets of thickness d and 3d, are touching each other. The temperature just outside the thinner sheet is T_1 and on the side of the thicker sheet is T_3 . The interface temperature is T_2. T_1, T_2 and T_3 are in arithmetic progression. The ratio of thermal conductivity of thinner sheet to thicker sheet is .

If a,b,c are in geometric progression and a,2b,3c are in arithmetic progression, then what is the common ratio r such that 0ltrlt1 ?

If a,b,c are in geometric progression and a,2b,3c are in arithmetic progression, then what is the common ratio r such that 0ltrlt1 ?

Two walls of thickness d and d and thermal conductivities k and k are in contact. In the steady state, if the temperature at the outer T_(1) and T_(2) , the temperature at the common wall is

Find the heat current through the frustum of a cone shown in figure-4.20. Temperature of its two ends are maintained at T_(1) and T_(2) (T_(2)>T_(1)) respectively and the thermal conductivity of the material is k.

Two rods of length d_(1) and d_(2) and coefficients of thermal conductivites K_(1) and K_(2) are kept touching each other. Both have the same area of cross-section. The equivalent thermal conductivity.