YourPariksha

Your Preparation, Your Success

HomeSubjectsMock TestsCurrent Affairs
HomeSubjectsMock TestsCurrent Affairs
© 2026 YourPariksha — Your Preparation, Your Success.
SubjectsMock TestsCurrent AffairsLog inAdmin
SubjectsGeneral SciencePhysicsChapter 4 — Modern Physics4.1 Atomic Structure & Radiation

Topic 4.1 · General Science · Modern Physics

Atomic Structure & Radiation

Atomic Structure & Radiation 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, atomic structure & radiation 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

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

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

Marie CurieHenri BecquerelVikram Sarabhai

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

4.2 Radioactivity4.3 Nuclear Energy & Reactors4.4 Space Science — ISRO Missions
Practice MCQs(2)Next Topic