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If the ratio of coefficient of thermal c...

If the ratio of coefficient of thermal conductivity of silver and copper is `10 : 9`, then the ratio of the length upto which wax will melt in Ingen Hauze experiment will be

A

`6 : 10`

B

`sqrt 10 : 3`

C

`100 : 81`

D

`81 : 100`

Text Solution

Verified by Experts

The correct Answer is:
B
(2) `K prop l^(2)`
`(K_(1))/(K_(2)) = ((l_(1))/(l_(2)))^(2) implies (l_(1))/(l_(2)) = sqrt((K_(1))/(K_(2))) = sqrt((10)/(5)) = (sqrt(10))/(3)`
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CP SINGH-HEAT TRANSFER-Exercises
  1. A composite block is made of slabs A,B,C,D and E of different thermal ...

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  2. According to the experiment of Ingen Hauze the relation between the th...

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  3. If the ratio of coefficient of thermal conductivity of silver and copp...

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  4. Temperature of water at the surface of lake is - 20^(@)C. Then tempera...

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  5. Ice starts forming in lake with water at 0^(@)C and when the atmospher...

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  6. A 5 cm thick ice block is there on the surface of water in a lake. The...

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  7. In a 10 m deep lake, the bottom is at a constant temperature of 4^(@)C...

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  8. In heat transfer, which method is based on gravitation ?

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  9. When fluids are heated from the bottom, convection currents are prodcu...

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  10. If a liquid is heated in weightlessness, the heat is tramsmitted thruo...

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  11. In summer, a mild wind is often found on the shore of a clam river. Th...

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  12. The process in which rate of transfer of heat maximum is .

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  13. Which of the following law states that "good absorbers of heat are goo...

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  14. For a perfectly black body, its abosrpitve power is

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  15. At a certain temperature for given wavelength, the ratio of emissive p...

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  16. Three objects coloured black, gray and white can withstand hostile con...

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  17. An ideal Black-body at room temperature is thrown into a furnace. It i...

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  18. A hot body will radiate maximum energy if its surface is

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  19. A black body does not (i) emit radiation (ii) absorb radiation ...

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  20. The thermal radiation emited by a body is proportional to T^(n) where ...

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