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प्रश्न
Name the SI unit of heat.
उत्तर
Joule is the SI unit of heat.
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संबंधित प्रश्न
Fill in the blank
Heat is a form of _______.
What is heat ? State its S.I. unit.
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.
While deciding the unit for heat, which temperature interval is chosen? Why?
What will absorb heat?
Plastic plate
Complete the following sentence:
CGS units of heat is _________
Write scientific reason.
In the cold regions, snow falls in winter.
When an object is heated, the molecules that make up the object
Why does the bottom of a lake not freeze in severe winter though the surface is all frozen?
______ energy can be generated by the burning of fuels like coal, wood, charcoal, gasoline, etc.
Analogy:
Movement of molecules:: Heat.
Heat energy:: ______.
When an electric current is passing through the conductor ______ energy is produced.
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 a reason for your answer.
Observe the picture given in Figure 4.8. Water is being boiled in a pan of wide base.
- Which position P or T will feel warmer?
- Fill up the boxes P and T to indicate the mode of flow of heat to the hand.
Black color is a ______ absorber of heat.
Which of the following is true?
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?
Warm air is ______.
Explain the following effects of heat.
Chemical changes
