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प्रश्न
Write true or false for a given statement.
Black surfaces are the poor absorbers of heat radiations.
पर्याय
True
False
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उत्तर
False.
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संबंधित प्रश्न
Give two examples each of conductors and insulators of heat.
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.
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Maximum heat is absorbed by a ______ coloured object.
The earth receives heat from the sun by ______.
Why are the houses in Rajasthan painted white?
The handles of cooking utensils are made of ______.
Wrap a thin paper strip tightly around an iron rod. Try to burn the paper with candle while rotating the iron rod continuously. Does it burn? Explain your observation.
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.

