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प्रश्न
Select the correct alternative
In the process of convection, heat travel
पर्याय
sideways
downwards
upwards
in all directions
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उत्तर
upwards
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संबंधित प्रश्न
No medium is required for transfer of heat by the process of ______.
Stainless steel pans are usually provided with copper bottoms. The reason for this could be that ______.
Write true or false for a given statement.
Liquids are heated by conduction and 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
If we add a lump of ice to a tumbler containing water,
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?
Why are heaters fitted near the floor and air conditioners near the ceiling of a room?
When ice changes into a liquid, it absorbs energy.
