Home
Class 7
PHYSICS
Draw a labelled diagram of a thermos fla...

Draw a labelled diagram of a thermos flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to a minimum in it.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • HEAT

    ICSE|Exercise TEST YOURSELF (NUMERICALS )|7 Videos

  • HEAT

    ICSE|Exercise QUESTIONS|1 Videos

  • HEAT

    ICSE|Exercise TEST YOURSELF (SELECT THE CORRECT)|7 Videos

  • FORCE AND PRESSURE : MOTION

    ICSE|Exercise EXERCISES (SECTION II) (Picture Study) |4 Videos

  • LIGHT ENERGY

    ICSE|Exercise EXERCISE (PICTURE STUDY) |10 Videos

Similar Questions

Explore conceptually related problems

Draw well labelled diagram of phloem. Explain its various components.

What is heat transfer ? Explain conduction of heat.

Draw well labelled diagrams to explain mitosis in a cell.

Draw a well labelled diagram of an eukaryotic nucleus. How is it different form nucleoid?

Explain how heat transfer is reduced in a thermos flask.

How is the transference of heat energy by radiation prevented in a calorimeter ?

Draw a labelled ray diagram for the production of pure spectrum and explain.

Draw a diagram of a sweat gland. Explain how sweat is formed and expelled through the skin.

Draw well labelled diagrams explaining secondary growth in a dicot stem.

Explain briefly the process of heat transfer by radiation.

ICSE-HEAT-TEST YOURSELF (SHORT/LONG ANSWER TYPE QUESTIONS)
  1. Name a liquid which is a good conductor of heat.

    Text Solution

    |

  2. Name a solid which is a good conductor of heat.

    Text Solution

    |

  3. Select good and bad conductors of heat from the following: copper, mer...

    Text Solution

    |

  4. Why is an oven made of double walls with the space in between filled w...

    Text Solution

    |

  5. Why do we use cooking utensils made up of copper ?

    Text Solution

    |

  6. Why is a tea kettle provided with an ebonite handle ?

    Text Solution

    |

  7. In summer, ice is kept wrapped in a gunny bag. Explain the reason.

    Text Solution

    |

  8. Explain why we wear woolen clothes in winter ?

    Text Solution

    |

  9. Explain why the water pipes are covered with cotton during very cold w...

    Text Solution

    |

  10. Why are quilts filled with fluffy cotton ?

    Text Solution

    |

  11. State the direction of heat transfer by way of convection.

    Text Solution

    |

  12. Ventilators are built high up in a room. Give reason.

    Text Solution

    |

  13. Why are chimneys provided over furnaces in factories?

    Text Solution

    |

  14. What are land and sea breezes ? Explain their formation.

    Text Solution

    |

  15. Why is the freezing chest in a refrigerator fitted near its top ?

    Text Solution

    |

  16. Explain briefly the process of heat transfer by radiation.

    Text Solution

    |

  17. Give one example of heat transfer by radiation.

    Text Solution

    |

  18. Give reason We wear dark coloured clothes in winter and light colour...

    Text Solution

    |

  19. The bottom of a cooking utensil is painted black. Give the reason.

    Text Solution

    |

  20. Draw a labelled diagram of a thermos flask. Explain how the transfer o...

    Text Solution

    |