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प्रश्न
State the energy changes in the following case while in use:
an electric bulb
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उत्तर
Electrical energy into light energy
संबंधित प्रश्न
Fill in the blank
An object falling freely from the roof of a multistorey building has ________ and _________ energy when halfway down the building.
Name the type of energy (kinetic or potential) possessed by the following:
A compressed spring.
What is ocean? Explain in brief.
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s−2).
Write the type of energy possessed in the following case:
A falling apple
Name the two groups in which various sources of energy are classified?
State the energy changes which take place when:
A toy car spring is wound and car is made to run on level floor.
Give one example when:
Sound energy changes to electric energy.
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A moving cricket ball
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A compressed spring
