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प्रश्न
A device in which the loss of heat due to conduction, convection and radiation is minimized is ______.
पर्याय
solar cell
solar cooker
thermometer
thermos flask
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उत्तर
A device in which the loss of heat due to conduction, convection and radiation is minimized is thermos flask.
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संबंधित प्रश्न
Match the following
| Column A | Column B |
| 1. mercury | 1. insulator |
| 2. wood | 2. water from 0°C to 4°C |
| 3. Aluminum | 3.absorbs |
| 4. contracts | 4.conductor |
| 5.black surface | 5. Thermometer |
Name the mode of transfer of heat in the following :
(a) solid,
(b) liquid,
(c) gas
(d) vacuum
Draw a labelled diagram of a thermo flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to a minimum in it.
Define the term heat.
Cooking utensils are made from metals due to their property of ______.
What will absorb heat?
Steel spoon
______ is a form of energy.
When an electric current is passing through the conductor ______ energy is produced.
A marble tile would feel cold as compared to a wooden tile on a winter morning because the marble tile ______.
You would have noticed some space being left on railway tracks. Why?
