Home
Class 12
PHYSICS
The thermal conductivity of a rod is 2. ...

The thermal conductivity of a rod is 2. What is its thermal-resistivity ?

A

0.5

B

1

C

0.25

D

2

Text Solution

Verified by Experts

The correct Answer is:
A

Key Idea Thermal resistivity is reciprocal of thermal conductivity.
`"Thermal resistivity"=(1)/("Thermal conductivity")`
`=(1)/(2)`
0.5
Promotional Banner

Topper's Solved these Questions

  • MEASUREMENTS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise EXERCISE 2 (MISCELLANEOUS PROBLEMS)|17 Videos
  • MHTCET 2008

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise PHYSICS|49 Videos

Similar Questions

Explore conceptually related problems

Thermal conduction

The thermal conductivity of a rod depends on

Assertion : If thermal conductivity of a rod is 5 , then its thermal resistively is 0.2 Reason : Thermal conductivity = (1)/("thermal resistivity")

The area of cross-section of rod is given by A= A_(0) (1+alphax) where A_(0) & alpha are constant and x is the distance from one end. If the thermal conductivity of the material is K . What is the thermal resistancy of the rod if its length is l_(0) ?

The unit of thermal conductivity is :

Assertion : Greater is the coefficient of thermal conductivity of a material, smaller is the thermal resistance of a rod of that material. Reason : Thermal resistance is the ratio of temperature difference between the ends of the conductor and rate of flow of heat.

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.

Thermal conduction examples

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-MHTCET 2007-PHYSICS
  1. In an adiabatic change, the pressure and temperature of a monoatomic g...

    Text Solution

    |

  2. A pulse of a wave train travels along a stretched string and reaches t...

    Text Solution

    |

  3. The thermal conductivity of a rod is 2. What is its thermal-resistivit...

    Text Solution

    |

  4. Two plane mirrors are perpendicular to each other. A ray after sufferi...

    Text Solution

    |

  5. In diode, when there is saturation current, the plate resistance (r(p)...

    Text Solution

    |

  6. We consider the radition emitted by the human body which of the follow...

    Text Solution

    |

  7. A boat at anchor is rocked by waves whose crests are 100 m apart and w...

    Text Solution

    |

  8. In a double slit experiment, the distance between slits is increased 1...

    Text Solution

    |

  9. Which one of the following processes depends

    Text Solution

    |

  10. If a magnetic substance is kept in a magnetic field, then which of the...

    Text Solution

    |

  11. Which of the following phenomena exhibits particle nature of light ?

    Text Solution

    |

  12. A standing wave having 3 nodes and 2 antinodes is formed between two a...

    Text Solution

    |

  13. Fleming's left and right hand rule are used in

    Text Solution

    |

  14. A charge Q is situated at the corner of a cube the electric flux passe...

    Text Solution

    |

  15. Potentiometer measures the potential difference more accurately than a...

    Text Solution

    |

  16. Tangent Galvanometer

    Text Solution

    |

  17. In bringing an electron towards another electron, the electrostatic po...

    Text Solution

    |

  18. A parallel plate condenser with oil (dielectric constant 2) between th...

    Text Solution

    |

  19. As the intensity of incident light increases

    Text Solution

    |

  20. The cell has an emf of 2 V and the internal resistance of this cell is...

    Text Solution

    |