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प्रश्न
Write true or false for a given statement.
Telephone wires are kept tight between the two poles in summer.
पर्याय
True
False
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उत्तर
False.
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संबंधित प्रश्न
Write true or false for a given statement.
Equal volumes of different liquids expand by different amounts when they are heated to the same rise in temperature.
Write true or false for a given statement.
Kerosene contracts on heating.
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_________ determines the degree of hotness or coldness of a body.
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On heating a body, its temperature _______.
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Black and dull surfaces are ______ of heat.
A glass stopper stuck in the neck of a bottle can be removed by pouring hot water on the neck of the bottle. Explain why ?
Describe one experiment to show that liquids expand on heating.
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into the water. Explain the reason.
State which expands more, when heated to the same temperature : solid, liquid or gas ?
Explain why the water pipes are covered with cotton during very cold weather.
