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प्रश्न
What is nuclear energy? Explain the principle of producing electricity using nuclear energy is a nuclear reactor.
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उत्तर
The process whereby an atomic nucleus breaks up into two or more major fragments with the release of a tremendous amount of energy is called nuclear fusion and the energy thus released is nuclear energy.
Principle: The production of electricity using nuclear energy is based on the principle in which steam is produced by heating water through heat energy released during the controlled nuclear fission of uranium-235 (or plutonium-239). When atoms of uranium fuel are hit by neutrons they fission (split), releasing heat and more neutrons. Under controlled conditions, these other neutrons can strike more uranium atoms, splitting more atoms, and so on. Thereby, continuous fission can take place, forming a chain reaction releasing heat. The heat is used to turn water into steam that, in turn, spins a turbine that generates electricity. At present nuclear power is used to generate 3% of all the country’s electricity.
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संबंधित प्रश्न
State the energy change in the following device while in use:
A glowing electric bulb.
A certain form of energy which is not sourced directly or indirectly from the sun and does not cause any pollution is very easily converted into electricity. This form of energy is, however, not available everywhere. Moreover, it is technically very difficult and expensive to obtain it. Name the form of energy.
Differentiate between the potential energy (U) and the kinetic energy (K).
State the energy changes in the following case while in use:
an electric cell in a circuit
What is solar energy?
Name the energy changes for each of the following cases:
dynamo
What do you understand by the potential energy of the body?
Can you tell?
Describe one natural chain of transformation of energy.
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