Physics - Nuclear Physics
Practise 6 IAT (IISER) previous year questions on Nuclear Physics, compiled from papers spanning 2017 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty IAT (IISER) tests.
Nuclear Physics has been asked in 6 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 6 questions in all. 17% of them were easy, 83% moderate and 0% tough. Most of its questions came from 2026, with 1 question that year. In the last three years (2023–2026) it had 2 questions across 3 papers, about 0.7 per paper.
The chapter's 3 topics are not weighted equally: Radioactivity (3 questions, 50%), Nuclear energy (2 questions, 33%), and Nuclear structure (1 question, 17%) have been asked the most. Over the last five years the most frequent topics have been Nuclear energy (2) and Nuclear structure (1).
- 1The three numbers: (number of protons, number of neutrons, the radius) characterize a nucleus. What is the value of for two nuclei character2026Nuclear structure
- 2Atomic masses of two oxygen isotopes and are 15.99491 u and 17.99916 u , respectively, where u is the atomic mass unit. Masses of proton and2024Nuclear energy
- 3Consider that in a fission of a single Plutonium atom 207 MeV energy is released. Assuming all atoms of Plutonium undergo fission, which of 2022Nuclear energy
- 4The half life of a radioactive element is 2000 hours. Approximately how much time is required for the decay of of its nuclei?2021Radioactivity
- 5What is the probability that a radioactive nucleus will not have decayed after a time equal to twice its half-life?2018Radioactivity
- 6From the given plot of the decay rate R versus time of some radioactive nuclei, the half life of the nuclei in hours can be estimated to be2017Radioactivity
Frequently Asked Questions
1.How many questions are available for Nuclear Physics?
This chapter includes 6 questions compiled from IAT (IISER) papers spanning 2017 to 2026.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) questions specifically for the Nuclear Physics chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Nuclear Physics an important chapter for IAT (IISER) Physics?
Nuclear Physics has appeared in 6 of the 10 years of IAT (IISER) papers covered here, with 6 questions across 6 papers - about one per paper it appears in.
4.What is the difficulty level of Nuclear Physics questions in IAT (IISER)?
Of the 6 questions analysed for this chapter, 17% are easy, 83% moderate and 0% tough. 2026 had the most, with 1 question.
5.Which topics in Nuclear Physics should I focus on?
These topics have carried the most weightage in Nuclear Physics:
- Radioactivity - 3 questions (50%)
- Nuclear energy - 2 questions (33%)
- Nuclear structure - 1 question (17%)
6.Is Nuclear Physics's weightage in IAT (IISER) going up or down?
Across all 6 papers analysed, Nuclear Physics has averaged about 1.0 questions per paper. In the last three years (2023–2026), that average has fallen, at about 0.7 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.