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Physics - Nuclear Physics

Practise 85 TS EAMCET previous year questions on Nuclear Physics, compiled from papers spanning 2001 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty TS EAMCET tests.

Nuclear Physics has been asked in 21 of the 24 years of TS EAMCET papers analysed (2001–2024), with 85 questions in all. 58% of them were easy, 38% moderate and 5% tough. Most of its questions came from 2023, with 12 questions that year. In the last three years (2022–2024) it had 28 questions across 17 papers, about 1.6 per paper.

The chapter's 4 topics are not weighted equally: Radioactivity (38 questions, 45%), Nuclear structure (20 questions, 24%), and Nuclear reactions (17 questions, 20%) have been asked the most. Radioactivity has also led over the last five years, with 16 questions. Nuclear structure has produced the most tough questions (2).

  1. 1If of atoms of a radioactive element decay in 6 days, then the fraction of atoms of the element that decay in 8 days is04 May, 2025 (M)Radioactivity
  2. 2If the ratio of the mass numbers of two nuclei is , then the ratio of their surface areas is04 May, 2025 (M)Nuclear structure
  3. 3When an element decays into , the number of and particles emitted respectively are04 May, 2025 (E)Radioactivity
  4. 4During the disintegration of a radioactive nucleus of mass number 208 at rest, two alpha particles each with kinetic energy E are emitted. T04 May, 2025 (E)Nuclear energy
  5. 5A radioactive material of half-life 2.5 hours emits radiation that is 32 times the safe maximum level. The time (in hours) after which the m03 May, 2025 (M)Radioactivity
  6. 6If the number of uranium nuclei required per hour to produce a power of 64 kW is , then the energy released per fission is03 May, 2025 (M)Nuclear energy
  7. 7The range of weak nuclear force is of the order of03 May, 2025 (E)Nuclear structure
  8. 8If a radioactive substance decays in every 16 hours, then the percentage of the radioactive substance that remains after 2 days is03 May, 2025 (E)Radioactivity
  9. 9If a nucleus P converts into a nucleus Q by the decay of one alpha particle and two particles, then the nuclei and are03 May, 2025 (E)Radioactivity
  10. 10The average energy of a neutron produced in the fission of is02 May, 2025 (M)Nuclear energy
  11. 11If of a radioactive substance decays in 10 days, then the half life of the substance is (in days)02 May, 2025 (M)Radioactivity
  12. 12In decay, a neutron transforms into a proton within the nucleus according to the equation: In this equation the particle represented by ' ' 02 May, 2025 (E)Radioactivity
  13. 13Two radioactive substances A and B have same number of initial nuclei. If the halflives of A and B are 1.5 days and 4.5 days respectively, t02 May, 2025 (E)Radioactivity
  14. 14The operation of a nuclear reactor is said to be critical when the value of neutron multiplication factor is11 May, 2024 (M)Nuclear reactions
  15. 15An -particle of energy ' ' is liberated during the decay of a nucleus of mass number 236. The total energy released in this process is11 May, 2024 (M)Radioactivity
  16. 16The operation of a nuclear reactor is said to be critical when the value of neutron multiplication factor is10 May, 2024 (M)Nuclear reactions
  17. 17An -particle of energy ' ' is liberated during the decay of a nucleus of mass number 236. The total energy released in this process is10 May, 2024 (M)Nuclear energy
  18. 18After the decay of a single ' ' particle, the parent and daughter nuclei are10 May, 2024 (E)Radioactivity
  19. 19nucleus decays to nucleus. The number of and particles emitted are10 May, 2024 (E)Radioactivity
  20. 20The half-life of a radioactive substance is 12 minutes. The time gap between decay and decay of the radioactive substance is09 May, 2024 (M)Radioactivity
  21. 21An element consists of a mixture of three isotopes , and of masses and respectively. If the relative abundances of the three isotopes and is09 May, 2024 (M)Nuclear structure
  22. 22The half lives of two radioactive materials and are respectively and . If the ratio of the initial masses of the materials and is , then the09 May, 2024 (E)Radioactivity
  23. 23The energy released by the fission of one uranium nucleus is 200 MeV . The number of fissions per second required to produce 128 W power is09 May, 2024 (E)Nuclear reactions
  24. 24The half-life period of element is same as the mean life time of element . Assume initially and have same number of atoms. Then14 May, 2023 (M)Radioactivity
  25. 25Heavy water is used as moderator in nuclear reactor because14 May, 2023 (M)Nuclear reactions
  26. 26113. Energy released in the fission of a single uranium nucleus is . Then the number of fissions per second to produce power is14 May, 2023 (E)Nuclear reactions
  27. 27Half-life of a radioactive substance A is two times the half-life of another radioactive substance . Initially the number of nuclei of and a14 May, 2023 (E)Radioactivity
  28. 28-decay of a parent nucleus results in a daughter nucleus Y. If and are the masses of the parent nucleus, the daughter nucleus and the - part13 May, 2023 (M)Radioactivity
  29. 29In the nuclear fission of one nucleus of the energy released is . The energy released in the nuclear fission of of is nearly (Avogadro numbe13 May, 2023 (M)Nuclear reactions
  30. 30The radius of nucleus of mass number 27 is . Which of the following is true about a nucleus whose radius is ?13 May, 2023 (E)Nuclear structure
  31. 31The nucleus undergoes the series of reactions given below: The number of neutrons in the nucleus is13 May, 2023 (E)Nuclear reactions
  32. 32The energy equivalent to a mass of is12 May, 2023 (M)Nuclear energy
  33. 33If is the surface area of a nucleus of mass number , th en12 May, 2023 (M)Nuclear structure
  34. 34In the following nuclear reaction is12 May, 2023 (E)Nuclear reactions
  35. 35Nuclear fission and fusion can be explained on the basis of12 May, 2023 (E)Nuclear reactions
  36. 36Estimate the approximate volume of aluminium nucleus20 Jul, 2022 (M)Nuclear structure
  37. 37What will be the energy released in joule, in the process of fission by of . Assume energy release per fission is . [useAvogadro's number as20 Jul, 2022 (E)Nuclear energy
  38. 38The range of the nuclear force is19 Jul, 2022 (E)Nuclear structure
  39. 39What is the mass number of nucleus having radius equal to of that of Os?19 Jul, 2022 (E)Nuclear structure
  40. 40As the mass number A increases, which of the following quantities related to a nucleus does not change?18 Jul, 2022 (M)Nuclear structure
  41. 41Consider a nucleus X 30 60 . It s approximate density is (Take 1 amu = 1 . 6 10 - 27 kg , R o = 1 . 2 10 - 15 m )18 Jul, 2022 (E)Nuclear structure
  42. 42Which one of the following statement is correct?06 Aug, 2021 (E)Nuclear structure
  43. 43The de-Broglie wavelength of an electron having kinetic energy 100 eV is, [Use h = 4 . 14 10 - 15 eVs , mass of electron = 0 . 5 10 6 c 2 eV05 Aug, 2021 (M)Nuclear structure
  44. 44A hydrogen atom emits a photon corresponding to an electron transition from n = 5 to n = 1 . If R is the Rydberg constant, then the waveleng05 Aug, 2021 (E)Nuclear reactions
  45. 45Which of the following particle has the shortest de-Broglie wavelength?04 Aug, 2021 (M)Nuclear reactions
  46. 46The mass number of an iodine nucleus and a polonium nucleus is 125 and 216 respectively. The ratio of radius of iodine nucleus to that of po04 Aug, 2021 (E)Nuclear structure
  47. 47The distance between two nucleons for which the potential energy is minimum, is04 Aug, 2021 (E)Nuclear energy
  48. 48Half-life of radioactive sample is . If a newly prepared radioactive sample shows 4 times the allowed and safe value of radio activity, the 14 Sep, 2020 (M)Radioactivity
  49. 49If denotes the wavelength at which the radiative emission from a black body at a temperature is maximum, then14 Sep, 2020 (E)Radioactivity
  50. 50The half-life of a radiocative isotope is . How long will it take to get reduced to of its initial amount?14 Sep, 2020 (E)Radioactivity

Frequently Asked Questions

1.How many questions are available for Nuclear Physics?

This chapter includes 85 questions compiled from TS EAMCET papers spanning 2001 to 2025.

2.Are these questions only from TS EAMCET, or from other exams too?

These are TS EAMCET 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 TS EAMCET Physics?

Nuclear Physics has appeared in 22 of the 25 years of TS EAMCET papers covered here, with 85 questions across 58 papers - about one per paper it appears in.

4.What is the difficulty level of Nuclear Physics questions in TS EAMCET?

Of the 85 questions analysed for this chapter, 58% are easy, 38% moderate and 5% tough. 2023 had the most, with 12 questions.

5.Which topics in Nuclear Physics should I focus on?

These topics have carried the most weightage in Nuclear Physics:

  • Radioactivity - 38 questions (45%)
  • Nuclear structure - 20 questions (24%)
  • Nuclear reactions - 17 questions (20%)
  • Nuclear structure has produced the most tough questions (2).
6.Is Nuclear Physics's weightage in TS EAMCET going up or down?

Across all 58 papers analysed, Nuclear Physics has averaged about 1.5 questions per paper. In the last three years (2022–2024), that average has stayed about the same, at about 1.6 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.