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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
Give one relevant example for the following transformation of energy:
Electrical energy to heat energy.
Give one relevant example for the following transformation of energy :
Electrical energy to light energy.
A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
State two uses of solar cells.
Explain the principle of producing electricity using the nuclear energy.
What kind of energy is possessed in a situation when?
A fish moving in the water.
Give two examples each of renewable and non-renewable sources of energy?
State the energy changes which take place when:
In a heat engine.
Give one example when:
Mechanical energy changes to electric energy.
Calculate the kinetic energy of a body of mass 0.1 kg. and momentum 40kg m/s.
