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प्रश्न
Write true or false for a given statement.
Telephone wires are kept tight between the two poles in summer.
विकल्प
True
False
उत्तर
False.
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संबंधित प्रश्न
Write true or false for a given statement.
Water is a bad conductor of heat.
The fig. shows a glass tumbler containing hot milk which is placed in a tub of cold water. State the direction in which heat will flow.
What do you understand by thermal expansion of a substance ?
Why is a cement floor laid in small pieces with gaps in between?
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 ?
Why are quilts filled with fluffy cotton?
The applied heat energy can be realized as an increase in the average kinetic energy of the molecules.
During day time, air blows from______ to______
______ is greater for liquids than solids and it is maximum in gases.
