Home
Class 11
PHYSICS
Two conductors of identical dimensions o...

Two conductors of identical dimensions of length and area of cross section are connected in series. What will be their equivalent thermal conductivity?

Text Solution

Verified by Experts

`K=(2K_1K_2)/(K_1+K_2),A=A_1=A_2` and `L=2L_1=2L_2`
Where, A - effective area of cross section and L is the effective length of combination.
Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER

    SUBHASH PUBLICATION|Exercise TWO MARKS QUESTION AND ANSWERS|21 Videos

  • THERMAL PROPERTIES OF MATTER

    SUBHASH PUBLICATION|Exercise THREE MARKS QUESTIONS AND ANSWERS|12 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    SUBHASH PUBLICATION|Exercise NUMERICAL WITH SOLUTIONS|34 Videos

  • THERMODYNAMICS

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|24 Videos

Similar Questions

Explore conceptually related problems

Two conductors of identical dimensions of length and area of cross-section are connected in parallel. What will be their equivalent thermal conductivity?

Two conductors the of same lengths and areas of cross-section are connected in series. Give the expression for common (junction) temperature.

Two resistors are connected in parallel. What will happen to its equivalent resistance?

How electrical resistance varies along the length and area of cross section.

How does electrical resistance depend on the area of cross-section of a conductor?

Two wires of same dimensions but resistivities rho_1 and rho_2 are connected in series. The equivalent resistivity of the combination is

Two slabs different materials with identical dimensions have their thermal condcutivities lambda_1 and lambda_2 respectively . When they are placed in contact with each other such that heat flows from one into the other ( placed in series ) , the equivalent thermal conductivity of the composite wall is given by

SUBHASH PUBLICATION-THERMAL PROPERTIES OF MATTER-FOUR MARKS QUESTIONS AND ANSWERS
  1. Two conductors of identical dimensions of length and area of cross sec...

    Text Solution

    |

  2. Show that R=8.314 Jmol^(-1)K^(-1)

    Text Solution

    |

  3. If the coefficient of linear expansion of iron is 1.20xx10^-5K^(-1) a...

    Text Solution

    |

  4. Given that molar specific heats of gas at' constant pressure and volum...

    Text Solution

    |

  5. Two metal rods made up of iron (K1=79Wm^(-1)K^(-1)) and brass (K2=109W...

    Text Solution

    |

  6. The thickness of a brick wall is 0.25m. The temperatures inside and ou...

    Text Solution

    |

  7. Find the amount of heat required to convert 10 kg ice at -10^(@)C to w...

    Text Solution

    |

  8. A body cools from 80^(@)C to 50^(@)C in 5 minutes. Calculate the time ...

    Text Solution

    |

  9. A cubical ice box of thermocol has each side 30 cm and thickness 5 cm ...

    Text Solution

    |

  10. A brass boiler has a base area of 0.15m^2 and thickness 1 cm. It boils...

    Text Solution

    |

  11. Estimate the temperature on the surface of the Sun from the following ...

    Text Solution

    |

  12. A body cools from 80^(@)C to 50^(@)C in 5 minutes. Calculate the time ...

    Text Solution

    |

  13. Sun emits maximum radiant energy at 5461A and Moon at 10mum. If the su...

    Text Solution

    |

  14. Luminosity of a distant star is 16000 times that of the Sun. If the su...

    Text Solution

    |

  15. The thickness of a filament wire is 0.15 mm and length 10 cm. The fila...

    Text Solution

    |

  16. A small cavity of diameter 2 mm whose temperature is 3000K acts as a b...

    Text Solution

    |

  17. Two vessels of different materials are identical in size and wall thic...

    Text Solution

    |

  18. At what rate a layer of ice will be formed if the surrounding temperat...

    Text Solution

    |

  19. Initial ice layer on a pond is 10 mm. What time will it take to form a...

    Text Solution

    |

  20. One end of a thick copper rod is immersed into a steam chamber and the...

    Text Solution

    |

  21. If the thermal conductivity of the material of a conductor is 375 W m^...

    Text Solution

    |