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प्रश्न
State the energy changes which take place when:
Burning of coal.
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उत्तर
The chemical energy changes into heat energy.
संबंधित प्रश्न
Give one relevant example for the following transformation of energy :
Electrical energy to light energy.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
A stretched wire
Name the form of energy which a body may possess even when it is not in motion. Give an example to support your answer.
State whether a solar cell produces a.c. or d.c.
Write five forms of energy.
What kind of energy is possessed in a situation when?
An electron spinning around the nucleus.
State the energy changes which take place when:
In a heat engine.
State the energy changes which take place when:
A car moves up a hill.
State the energy changes which take place when:
Water freezes in the freezing chamber of a fridge.
A boy sits and stands repeatedly. Draw a graph showing the variation of potential energy with time.
