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प्रश्न
______ of heat does not require a medium.
पर्याय
radiation
white
conduction
blue
convection
bad conductor
good conductor
black
reflection
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उत्तर
Convection of heat does not require a medium.
Explanation:
In convection, when the temperature of a substance increases due to heat, its molecules move faster, causing them to rise. As a result, cooler and denser objects sink to the bottom. This process is possible only when a substance (liquid or gas) is present, as it requires the mobility and movement of molecules.
संबंधित प्रश्न
Give two examples each of conductors and insulators of heat.
No medium is required for transfer of heat by the process of ______.
Fill in the blank
Heat transfer in solids is by ______
Why is the freezing chest in a refrigerator fitted near its top?
Explain briefly the process of heat transfer by radiation.
The earth receives heat from the sun by ______.
Why are the houses in Rajasthan painted white?
Why are heaters fitted near the floor and air conditioners near the ceiling of a room?
The handles of cooking utensils are made of ______.
When a liquid boils, energy is absorbed.
