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प्रश्न
Name the SI unit of heat.
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उत्तर
Joule is the SI unit of heat.
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संबंधित प्रश्न
Match the following
| Column A | Column B |
| 1. mercury | 1. insulator |
| 2. wood | 2. water from 0°C to 4°C |
| 3. Aluminum | 3.absorbs |
| 4. contracts | 4.conductor |
| 5.black surface | 5. Thermometer |
Select the correct alternative
A thermometer uses
What is heat ? State its S.I. unit.
While deciding the unit for heat, which temperature interval is chosen? Why?
What will absorb heat?
Wooden spoon
What will absorb heat?
Plastic plate
The unit of heat and temperature are the same.
Calorie is the unit of ______.
______ is a form of energy.
We can absorb heat by rubbing two surfaces of some substances.
In the past, people used to rub two wooden pieces together to light fire.
Analogy:
Movement of molecules:: Heat.
Heat energy:: ______.
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 ______.
The water in the black can becomes ______ than that in a white can after exposure to the sun.
Assertion: Small gaps left between railway lines.
Reason: It allows for the contraction of rails during summer.
In which of the following, chemical energy is converted into 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 |
