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प्रश्न
Fill in the blank
Heat is a form of _______.
विकल्प
electrical energy
gravitational energy
thermal energy
None of these
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उत्तर १
Heat is a form of energy.
उत्तर २
Heat is a form of thermal energy.
संबंधित प्रश्न
Select the correct alternative
A thermometer uses
Draw a labelled diagram of a thermo flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to a minimum in it.
Define one kilo-calorie of heat.
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.
The unit of heat is
If you apply some heat energy to a substance, which of the following can take place in it?
The amount of heat gained by a substance is equal to the product of its mass and latent heat.
We feel the heat on our body when the ______ shines.
______ energy can be generated by the burning of fuels like coal, wood, charcoal, gasoline, etc.
How can heat energy be generated?
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.
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?
The SI unit of heat energy is ______.
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 |
You would have noticed some space being left on railway tracks. Why?
Arrange the following in order of decreasing the expansion of heating: Steel, milk, air.
Which of the following is true?
