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प्रश्न
Write five forms of energy.
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उत्तर
(i) Mechanical energy
(ii) Chemical energy
(iii) Solar energy
(iv) Heat energy
(v) Light energy.
संबंधित प्रश्न
What is geothermal energy?
Name the type of energy (kinetic or potential) possessed by the following:
A moving cricket ball.
Give one example to show the conversion of potential energy to kinetic energy when put in use.
Select the renewable and non-renewable sources of energy from the following:
Diesel
Select the renewable and non-renewable sources of energy from the following:
Oil
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
Give three examples of bodies possessing potential energy.
State the energy changes which take place when:
An air gun is loaded and then fired.
Give one example when:
Electric energy changes to sound energy.
