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The thermal conductivity of a rod depend...

The thermal conductivity of a rod depends on

A

length

B

mass

C

area of x-section

D

material of the rod

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The correct Answer is:
D
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A: The thermal conductivity of a body depends on its material and dimensions. R: Thermal conductivity is proportional to length and inversely proportional to area cross-section of body.

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Four rods identical in all respect other than their thermal conductivity are joined to form a square loop.The thermal conductivity of rods are shown in the figure.The ratio of temperatures of point A and B (in steady state) is (k)/(35) . Find the value of k. Other two ends are maintained at 100^(@)C and 20^(@)C

CP SINGH-HEAT TRANSFER-Exercises
  1. When two ends of a rod wrapped with cotton are maintained at differenc...

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  2. The thermal conductivity of a rod depends on

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  3. One end of a metal rod is kept in a furnace. In steady state, the temp...

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  4. In a room containing air, heat can go from one place to another

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  5. The two ends of uniform rod of thermal conductivity K are maintained a...

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  6. Which of the following circular rods (given radius r and length l) eac...

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  7. Two rods A and B are of equal lengths. Their ends of kept between the ...

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  8. The temperature gradient in a rod of 0.5 m length is 80^(@)C//m. It th...

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  9. A cylindrical rod having temperature T(1) and T(2) at its ends. The ra...

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  10. The heat is flowing through two cylinderical rods of same material. Th...

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  11. Two identical vessels are filled with equal amounts of ice. The vessel...

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  12. One end of a themally insulated copper rod of length 1 m long and of 1...

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  13. A glass window conducts out a certain quantity of heat per second when...

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  14. Two walls of thicknes l(1) and l(2) and ther-mal condctivities K(1) an...

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  15. A slab consists of two layers of different materials of the same thick...

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  16. Two rods of the same length and diameter, having thermal conductivitie...

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  17. Consider a compound slab consisting of two different material having e...

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  18. A cylinder of radius R made of a material of thermal conductivity K1 i...

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  19. A long metallic bar is carrying heat from one of its ends to the other...

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  20. A and B are two points on uniform metal ring whose centre is O The ang...

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