Advertisements
Advertisements
प्रश्न
State the energy changes which take place when:
Water freezes in the freezing chamber of a fridge.
Advertisements
उत्तर
The kinetic energy of water molecules is released in the form of heat energy.
संबंधित प्रश्न
State two advantages of geothermal energy.
Select the renewable and non-renewable sources of energy from the following:
Water
Select the renewable and non-renewable sources of energy from the following:
Oil
State whether a solar cell produces a.c. or d.c.
Explain the principle of working of the windmill for generating electricity.
State the energy changes which take place when:
A body thrown vertically upwards from the ground.
Give one example when:
Potential energy changes to electric energy.
What is the form of that graph between
(i) K.E. and velocity for a constant mass?
(ii) K.E. and mass for a constant velocity?
What is nuclear energy? Explain the principle of producing electricity using nuclear energy is a nuclear reactor.
Can you tell?
Describe one natural chain of transformation of energy.
