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प्रश्न
Define the term heat.
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उत्तर
The kinetic energy due to random motion of the molecules of a substance is known as its heat energy.
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संबंधित प्रश्न
Fill in the blank and rewrite the sentence.
If objects of equal masses are given equal heat, their final temperature will be different. This is due to difference in their ................. .
What will absorb heat?
Water
Complete the following sentence:
CGS units of heat is _________
Write scientific reason.
In the cold regions, snow falls in winter.
Why does the bottom of a lake not freeze in severe winter though the surface is all frozen?
Calorie is the unit of ______.
A circular metal loop is heated at point O as shown in the following figure.
- In which direction would heat flow in the loop?
- In which order are the pins at points P, Q and R fixed with the help of wax fall if points O, P, Q and R are equidistant from each other?
What is heat energy?
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?
Match the following:
| Column A | Column B | ||
| 1. | Heat | a. | Heat gained or lost in the change of state without any change in temperature |
| 2. | m × L. | b. | Heat gained or lost when there is no change of state |
| 3. | Temperature | c. | Form of energy |
| 4. | m × s × t | d. | SI unit of specific latent heat |
| 5. | J/Kg | e. | degree of hotness or coldness |
