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Physics - Atomic Physics

Practise 18 BITSAT previous year questions on Atomic Physics, compiled from papers spanning 2009 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty BITSAT tests.

Atomic Physics has been asked in 13 of the 16 years of BITSAT papers analysed (2009–2024), with 18 questions in all. 28% of them were easy, 67% moderate and 6% tough. Most of its questions came from 2024, with 3 questions that year. In the last three years (2022–2024) it had 6 questions across 6 papers, about 1 per paper.

The chapter's 3 topics are not weighted equally: Atomic Spectrum (10 questions, 56%), Bohr's Atomic Model (7 questions, 39%), and Atomic Structure (1 question, 6%) have been asked the most. Atomic Spectrum has also led over the last five years, with 4 questions. Atomic Spectrum has produced the most tough questions (1).

  1. 1The minimum excitation energy of an electron revolving in the first orbit of hydrogen is2024 (Memory Based Paper 1)Atomic Spectrum
  2. 2The ratio of the shortest wavelength of Balmer series to the shortest wavelength of Lyman series for hydrogen atom is:2024 (Memory Based Paper 2)Atomic Spectrum
  3. 3Which of the following transitions of ion will give rise to spectral line which has same wavelength as the spectral line in hydrogen atom?2024 (Memory Based Paper 3)Atomic Spectrum
  4. 4A electron beam is used to bombard gaseous hydrogen at room temperature. The number of spectral lines emitted will be:2023 (Memory Based Paper 1)Atomic Spectrum
  5. 5The angular momentum for the electron in Bohr's orbit is L. If the electron is assumed to revolve in second orbit of hydrogen atom, then the2023 (Memory Based Paper 2)Bohr's Atomic Model
  6. 6The stopping potential versus frequency of a graph for photoelectric effect in a metal. From the graph, the planck's constant is.2022Bohr's Atomic Model
  7. 7The significant result deduced from the Rutherford's scattering experiment is that2021Atomic Structure
  8. 8The energy of electron in the nth orbit of hydrogen atom is expressed as . The shortest and longest wavelength of Lyman series will be2020Bohr's Atomic Model
  9. 912 eV energy is given to electron in third orbit of H -atom, then final energy of electron when it ionise from third orbit, is2019Bohr's Atomic Model
  10. 10The total energy of an electron in the first excited state of hydrogen is about - 3 . 4 eV . Its kinetic energy in this state is2017Bohr's Atomic Model
  11. 11Monochromatic radiation of wavelength is incident on a hydrogen sample in ground state. Hydrogen atom absorbs a fraction of light and subseq2017Atomic Spectrum
  12. 12An -particle after passing through potential difference of V volt collides with a nucleus. If the atomic number of the nucleus is Z , then d2017Bohr's Atomic Model
  13. 13If the series limit wavelength of Lyman series for the hydrogen atom is then the series limit wavelength for Balmer series of hydrogen atoms2016Atomic Spectrum
  14. 14One of the lines in the emission spectrum of has the same wavelength as that of the line of Balmer series in hydrogen spectrum. The electron2015Atomic Spectrum
  15. 15If hydrogen atom, an electron jumps from bigger orbit to smaller orbit so that radius of smaller orbit is one-fourth of radius of bigger orb2014Bohr's Atomic Model
  16. 16The energies of energy levels and for a given atom are in the sequence . If the radiations of wavelengths and are emitted due to the atomic 2011Atomic Spectrum
  17. 17Hydrogen atom in ground state is excited by a monochromatic radiation of . Number of spectral lines in the resulting spectrum emitted will b2010Atomic Spectrum
  18. 18Taking Rydberg's constant , first and second wavelength of Balmer series in hydrogen spectrum is2009Atomic Spectrum

Frequently Asked Questions

1.How many questions are available for Atomic Physics?

This chapter includes 18 questions compiled from BITSAT papers spanning 2009 to 2024.

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

These are BITSAT questions specifically for the Atomic Physics chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Atomic Physics an important chapter for BITSAT Physics?

Atomic Physics has appeared in 13 of the 16 years of BITSAT papers covered here, with 18 questions across 16 papers - about one per paper it appears in.

4.What is the difficulty level of Atomic Physics questions in BITSAT?

Of the 18 questions analysed for this chapter, 28% are easy, 67% moderate and 6% tough. 2024 had the most, with 3 questions.

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

These topics have carried the most weightage in Atomic Physics:

  • Atomic Spectrum - 10 questions (56%)
  • Bohr's Atomic Model - 7 questions (39%)
  • Atomic Structure - 1 question (6%)
  • Atomic Spectrum has produced the most tough questions (1).
6.Is Atomic Physics's weightage in BITSAT going up or down?

Across all 16 papers analysed, Atomic Physics has averaged about 1.1 questions per paper. In the last three years (2022–2024), that average has stayed about the same, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.