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प्रश्न
Give one example when:
Electric energy changes to sound energy.
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उत्तर
When a loudspeaker works, the electric energy changes to sound energy.
संबंधित प्रश्न
Write true or false of the following statement.
There is always some loss of energy in conversion from one form of energy to another form, so the total energy is not conserved.
Name the type of energy (kinetic or potential) possessed by the following:
A moving cricket ball.
Name two examples in which the mechanical energy of a system remains constant.
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The total energy possessed by the body at any instant? (Take g = 10 ms-2).
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
State the energy changes which take place when:
Water freezes in the freezing chamber of a fridge.
Give one example when:
Light energy changes to chemical energy.
Give one example when:
Potential energy changes to electric energy.
A body of mass m is taken from a height h to 2h. What is the increase in its potential energy?
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A moving cricket ball
