Home
Class 12
PHYSICS
Air and wood are bad conductors of heat....

Air and wood are bad conductors of heat. The heat emitted by hot body is not able to reach us when a wooden screen is interposed bu this is not case where air is present. Explain.

Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER (HEAT PHENOMENA)

    MBD PUBLICATION|Exercise QUESTION BANK|232 Videos
  • THERMODYNAMICS

    MBD PUBLICATION|Exercise QUESTION BANK|338 Videos
MBD PUBLICATION-THERMAL PROPERTIES OF MATTER (HEAT TRANSFER)-QUESTION BANK
  1. When a hot body warms a cool one are their temperature changes equal i...

    Text Solution

    |

  2. Two persons ordered tea in a restaurant and waited his a friend to arr...

    Text Solution

    |

  3. Air and wood are bad conductors of heat. The heat emitted by hot body ...

    Text Solution

    |

  4. A solid sphere of copper of radius R and a hollow aphere of the same ...

    Text Solution

    |

  5. The top of lake is frozen. Air in contact is at -15^@ C What do you ex...

    Text Solution

    |

  6. The top of lake is frozen. Air in contact is at -15^@ C What do you ex...

    Text Solution

    |

  7. Ratio of coefficient of thermal conductivity of two different material...

    Text Solution

    |

  8. what is the mode of heat transfer applied o solids.

    Text Solution

    |

  9. Name the only liquid which is a good conductor of heat.

    Text Solution

    |

  10. What is the dimensional formula of co-efficient of thermal conductivit...

    Text Solution

    |

  11. Are good absorber good emitters ?

    Text Solution

    |

  12. Are good reflectors poor emitters ?

    Text Solution

    |

  13. When a green glass heated to high temperature what it will glow ?

    Text Solution

    |

  14. The co-efficient of thermal conductivity in which case of conductors i...

    Text Solution

    |

  15. Whether air is a good conductor of heat ?

    Text Solution

    |

  16. What is the sum of absorbing power reflecting power and transmitting p...

    Text Solution

    |

  17. What is the unit of thermal conductance ?

    Text Solution

    |

  18. Bond energy is highest for :

    Text Solution

    |

  19. Which mode of heat transfer do not require a medium?

    Text Solution

    |

  20. What is the value of wien's constant ?

    Text Solution

    |