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प्रश्न
Name a device in which solar energy is converted into electricity state its two uses.
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उत्तर
Solar cell.
Its two uses are:
(i) All artificial satellites and space probes mainly depend upon electricity generated by solar cells.
(ii) Solar cells are used for lighting, operating water pumps, running radio and television sets in remote areas and traffic signals, etc.
संबंधित प्रश्न
Name the process used for producing electricity using nuclear energy.
Select the renewable and non-renewable sources of energy from the following:
Water
What kind of energy is possessed in a situation when?
A cocked up spring of air gun.
State the energy changes which take place when:
An air gun is loaded and then fired.
Give one example when:
Heat energy changes to kinetic energy.
Give one example when:
Electric energy changes to sound energy.
Give one example when:
Chemical energy changes to light energy.
Show that in case of a body falling freely under gravity, total mechanical energy remains conserved (neglect air resistance).
A body of mass m is taken from a height h to 2h. What is the increase in its potential energy?
The major problem in harnessing nuclear energy is how to
