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प्रश्न
Conduction of heat takes place through a ______ substance.
विकल्प
Radiation
White
Conduction
Blue
Convection
Bad conductor
Good conductor
Black
Reflection
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उत्तर
Conduction of heat takes place through a good conductor substance.
Explanation:
This process occurs when heat moves from a higher temperature area to a lower temperature area, and is most effective in solids. Heat transfer in solids occurs due to direct contact between molecules or molecules.
संबंधित प्रश्न
Look at Figure. Mark where the heat is being transferred by conduction, by convection and by radiation.
Write true or false for a given statement.
Black surfaces are the poor absorbers of heat radiations.
Fill in the blank
A hot metallic piece is placed in tap water contained in a bucket. Heat will flow from _______ to _________
Select the correct alternative
In the process of convection, heat travel
______ of heat does not require a medium.
The earth receives heat from the sun by ______.
How does a fever get lowered by putting a cold compress on the forehead of a patient?
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 |
Heat is the transfer of energy between two objects at different temperatures.
When a liquid boils, energy is absorbed.
