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Show that in a compound slab the tempera...

Show that in a compound slab the temperature gradient in each position is inversely proportional to the thermal conductivity. [See Fig. 11.18 (a)]

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`Q// t = K_1 A_1 ( theta_1 - theta) // x_1 = K_2 A_2 ( theta- theta_2) // x_2 , A_1 = A_2 = A, ( theta_1 - theta// x_1 ) // ( theta- theta_2// x_2) = K_2 // K_1`
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ICSE-THERMAL CONDUCTION-SELECTED PROBLEMS (Taken from the Previous Years ISC, AISSCE, HSSCE various States. Boards Roorke Qns & NCERT text) FROM MASS OF ICE MELTED
  1. One face of the a cube of side 0.2 m is in contact with ice and the op...

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  2. The opposite faces of a cubical block of iron of cross-section 4 xx 10...

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  3. A copper rod of length 60 cm long and 8 mm in radius is taken and its ...

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  4. One side of an iron plate one metre square is kept at 100°C and the ot...

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  5. Two beakers, identical in all respects, but made of different material...

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  6. A brass boiler has a base area of 0.15 "m"^(2) and thickness is 1.0 "c...

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  7. Show that in a compound slab the temperature gradient in each position...

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  8. A slab consists of two parallel layers of iron and brass 10 cm and 10....

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  9. An ice box is built of wood of thickness 1.75 cm. The box has an inner...

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  10. Two rods A and B of same area of cross-section are joined together end...

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  11. Two identical metal rods A and B are joined end to end. The free end o...

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  12. Two flat sheets of thickness d1 and d2 and thermal conductivities K1 a...

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  13. Two plates of equal area are placed in contact with each other. The th...

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  14. Two identical sheets of metal are welded end to end as shown in Fig. 1...

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  15. Calculate the thermal conductivity of the composite rod. The two rods ...

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  16. A cylinder of radius r made of a material of thermal conductivity K1 i...

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  17. A wall has two layers A and B each made of different materials. (See F...

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