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प्रश्न
Fill in the blank
Black and dull surfaces are ______ of heat.
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उत्तर
Black and dull surfaces are good absorbers of heat.
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संबंधित प्रश्न
Fill in the blank
_________ determines the degree of hotness or coldness of a body.
Fill in the blank
On heating a body, its temperature _______.
Name two substances which expand on heating.
Why is a cement floor laid in small pieces with gaps in between?
Describe one experiment to show that liquids expand on heating.
Name a liquid which is a good conductor of heat.
In summer, ice is kept wrapped in a gunny bag. Explain the reason.
What are the land and sea breezes? Explain their formation.
When we heat them the force of attraction between the molecules decreases and the ice cubes become ______.
______ is greater for liquids than solids and it is maximum in gases.
