JEE Physics
Nuclear Fission & Fusion: JEE Questions & Solutions
9 previous-year JEE Physics questions on Nuclear Fission & Fusion, each with a worked step-by-step solution.
Previous-year questions
- 01The average energy released per fission for the nucleus of ²³⁵₉₂U is 190 MeV. When all the atoms of 47 g pure ²³⁵₉₂U undergo fission…NVAEasyJEE 2026
- 02Energy released when two deuterons (₁H²) fuse to form a helium nucleus (₂He⁴) is: (Given: Binding energy per nucleon of ₁H² = 1.1 MeV and…MCQEasyJEE 2025
- 03Match the LIST-I with LIST-II LIST-I LIST-II A. ¹₀n + ²³⁵₉₂ U → ¹⁴⁰₅₄ Xe + ⁹⁴₃₈ Sr + 2 ¹₀n I. Chemical Reaction B. 2H₂ + O₂ → 2H₂O II.…MCQEasyJEE 2025
- 04The explosive in a Hydrogen bomb is a mixture of ²₁H, ³₁H, and ⁶₃Li in some condensed form. The chain reaction is given by: ⁶₃Li + ¹₀n →…MCQMediumJEE 2024
- 05A nucleus at rest disintegrates into two smaller nuclei with their masses in the ratio 2:1. After disintegration, they will move:MCQEasyJEE 2024
- 06The energy released in the fusion of 2 kg of hydrogen deep in the sun is E_H and the energy released in the fission of 2 kg of ²³⁵U is E_U.…MCQMediumJEE 2024
- 07The energy released per fission of nucleus of ²⁴⁰X is 200 MeV. The energy released if all the atoms in 120 g of pure ²⁴⁰X undergo fission…NVAEasyJEE 2023
- 08A nucleus disintegrates into two smaller parts, which have their velocities in the ratio 3/2. The ratio of their nuclear sizes will be…NVAEasyJEE 2023
- 09A nucleus disintegrates into two nuclear parts, in such a way that ratio of their nuclear sizes is 1: 2^(1/3). Their respective speed have…NVAEasyJEE 2023
Frequently asked questions
Our bank has 9 previous-year JEE Physics questions tagged to Nuclear Fission & Fusion, drawn from JEE papers between 2023 and 2026, including 1 from 2026 alone. Each comes with a full step-by-step solution.
Nuclear Fission & Fusion is rated Advanced overall for JEE Physics. The PYQs on this page break down as 7 easy, 2 medium.
Of the 9 previous-year questions on Nuclear Fission & Fusion, 5 are multiple-choice (MCQ) and 4 are numerical-value (NVA) questions.
Based on recent paper analysis, Nuclear Fission & Fusion is worth about 1 mark in JEE Main. It sits in Atoms & Nuclei, a Class 12 Physics chapter.
More Atoms & Nuclei topics
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