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SubjectsGeneral SciencePhysicsChapter 4 — Modern Physics4.3 Nuclear Energy & Reactors

Topic 4.3 · General Science · Modern Physics

Nuclear Energy & Reactors

Nuclear Energy & Reactors is studied as part of "Modern Physics" (Physics) in General Science. Atomic structure, radioactivity, nuclear energy and space science — the frontiers of physics with high current-affairs relevance.

In the examination context, nuclear energy & reactors carries conceptual questions that test both factual recall and analytical understanding. Revise this topic in sequence with the rest of the chapter so that chronological and thematic links are clear.

Important Facts

Half-life
Time for half the nuclei to decay
ISRO
India's space agency — Chandrayaan, Mangalyaan
Nuclear fission
Splitting of heavy nuclei — basis of reactors
Nuclear fusion
Fusing of light nuclei — energy of the Sun

Key Points

  • Nuclear fission — Splitting of heavy nuclei — basis of reactors
  • Nuclear fusion — Fusing of light nuclei — energy of the Sun
  • Half-life — Time for half the nuclei to decay
  • ISRO — India's space agency — Chandrayaan, Mangalyaan

Important Names

Vikram SarabhaiMarie CurieHenri Becquerel

Important Dates

1896Becquerel discovered radioactivity
1962ISRO established
Exam-Oriented Notes
  • »Fission powers nuclear reactors; fusion powers the Sun. Know India's space missions: Chandrayaan-3 (2023) and Aditya-L1.

Related topics

4.1 Atomic Structure & Radiation4.2 Radioactivity4.4 Space Science — ISRO Missions
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