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प्रश्न
Fill in the blank
Heat transfer in liquids and gases is by ________.
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उत्तर
Heat transfer in liquids and gases is by convection.
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संबंधित प्रश्न
No medium is required for transfer of heat by the process of ______.
Look at Figure. Mark where the heat is being transferred by conduction, by convection and by radiation.
A wooden spoon is dipped in a cup of ice cream. Its other end ______.
Stainless steel pans are usually provided with copper bottoms. The reason for this could be that ______.
State the direction of heat transfer by way of convection.
The earth receives heat from the sun by ______.
Why is the outer coat of the penguins of Antarctica black?
Match the items in column-I to the items in column-II
| Column-I | Column-II | ||
| 1. | Linear expansion | (a) | change in volume |
| 2. | Superficial expansion | (b) | hot body to cold body |
| 3. | Cubical expansion | (c) | 1.381 X 10-23 JK-1 |
| 4. | Cubical expansion | (d) | change in length |
| 5. | Boltzmann constant | (e) | change in area |
The handles of cooking utensils are made of ______.
Heat is the transfer of energy between two objects at different temperatures.
