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प्रश्न
To keep her soup warm Paheli wrapped the container in which it was kept with a woollen cloth. Can she apply the same method to keep a glass of cold drink cool? Give reason for your answer.
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उत्तर
Yes, she can apply the same method to keep a glass of cold drink cool because wool is a poor conductor of heat.
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संबंधित प्रश्न
Define the term heat.
What will absorb heat?
Glass
Define one calorie.
Calorie is the unit of ______.
The sun gives us light and heat.
When an electric current is passing through the conductor ______ energy is produced.
The water in the black can becomes ______ than that in a white can after exposure to the sun.
Match the following
| 1. | Heat | a. | Good absorber |
| 2. | Temperature | b. | Form of energy |
| 3. | Black surface | c. | Insulators |
| 4. | Rubber, cork | d. | The measure of hotness or coldness |
On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?
Heat gained by a body depends upon which factors?
