# Describe the principles of a nuclear reactor. - Physics

Short Note

Describe the principles of a nuclear reactor.

#### Solution

In a nuclear reactor fuel rods are used to provide a suitable fissionable material such as $\ce{_92^236U.}$ Control rods are used to start or stop the reactor. Moderators are used to slowing down the fast neutrons ejected in nuclear fission to the appropriate lower speeds. The material used as a coolant removes the energy released in the nuclear reaction by converting it into thermal energy for the production of electricity.

Concept: Nuclear Energy
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#### APPEARS IN

Balbharati Physics 12th Standard HSC Maharashtra State Board
Chapter 15 Structure of Atoms and Nuclei
Exercises | Q 9.1 | Page 342