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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
उत्तर
False.
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
Heat flows from a body at a high temperature to a body at a low temperature when they are kept in contact.
Write true or false for a given statement.
All solids expand by the same amount when heated to the same rise in temperature.
Write true or false for a given statement.
Kerosene contracts on heating.
Fill in the blank
_________ determines the degree of hotness or coldness of a body.
In summer, ice is kept wrapped in a gunny bag. Explain the reason.
Why are chimneys provided over furnace in factories?
The applied heat energy can be realized as an increase in the average kinetic energy of the molecules.
What are the effects of heat?
When we heat them the force of attraction between the molecules decreases and the ice cubes become ______.
Match the following
| 1. | Solid to liquid | a. | Condensation |
| 2. | Liquid to gas | b. | Deposition |
| 3. | Gas to solid | c. | Melting |
| 4. | Gas to liquid | d. | Vaporization |
