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प्रश्न
Give one example of heat transfer by radiation.
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उत्तर
When we sit in the sun, we feel warm. We cannot get heat from the sun by the process of conduction or convection because most of the space between the sun and the earth is a vacuum and both of these modes of heat transfer require medium. Hence, one must be getting heat from the sun by the mode of radiation.
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संबंधित प्रश्न
Write true or false for a given statement.
Liquids are heated by conduction and radiation.
Fill in the blank
A hot metallic piece is placed in tap water contained in a bucket. Heat will flow from _______ to _________
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Heat transfer in solids is by ______
Select the correct alternative
Heat in a liquid is transferred by
Select the correct alternative
In the process of convection, heat travel
Why is the freezing chest in a refrigerator fitted near its top?
Explain briefly the process of heat transfer by radiation.
Conduction of heat takes place through a ______ substance.
The earth receives heat from the sun by ______.
Take a sheet of paper. Draw a spiral on it as shown in Figure. Cut out the paper along the line. Suspend the paper as shown in Figure above a lighted candle. Observe what happens. Think of an explanation.

