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प्रश्न
Give one example when:
Chemical energy changes to light energy.
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उत्तर
During the burning of magnesium, chemical energy changes to light energy.
संबंधित प्रश्न
What is geothermal energy?
State the changes in form of energy while producing hydro electricity.
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
Differentiate between the potential energy (U) and the kinetic energy (K).
Name the energy changes for the following:
electric ball
What happens to the K.E. when
(i) the mass of the body is doubled at a constant velocity and
(ii) the velocity of the body is doubled at constant mass?
Explain the principle of working of the windmill for generating electricity.
State the energy changes which take place when:
An air gun is loaded and then fired.
State the energy changes which take place when:
A magnesium ribbon burns in air.
A boy sits and stands repeatedly. Draw a graph showing the variation of potential energy with time.
