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प्रश्न
What is heat ? Write its S.I. unit.
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उत्तर
Heat is the energy of random motion of molecules constituting the body.
Its S.I. unit is 'joule'.
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संबंधित प्रश्न
Fill in the blank
The S.I. unit of temperature is ________.
Fill in the blank with the correct word, from the words in option:
All the temperature on the kelvin scale are in ____ figures.
Do all substances expand on heating? Give examples.
How can a glass stopper jammed in the neck of a bottle be removed?
Give a scientific reason for the following:
In winter the human body covered with a blanket keeps warm.
Define the process of conduction.
Explain the following:
Conduction is not possible in vacuum.
What do you understand by thermal equilibrium?
Thermal energy always flows from a system at higher temperature to a system at lower temperature.
