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प्रश्न
Select the correct alternative
In the process of convection, heat travel
विकल्प
sideways
downwards
upwards
in all directions
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उत्तर
upwards
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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.
Medium is necessary for the transfer of heat by radiation.
Fill in the blank
Heat transfer in solids is by ______
Select the correct alternative
If we add a lump of ice to a tumbler containing water,
Select the correct alternative
The vacuum kept in between the walls of a thermos flask reduces the heat transfer by
Maximum heat is absorbed by a ______ coloured object.
______ of heat does not require a medium.
How does a fever get lowered by putting a cold compress on the forehead of a patient?
What are the modes of heat transfer?
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.
