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Bohr Model Questions

Practice 26 Bohr Model questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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26
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5
Easy
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16
Medium
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5
Hard
Practice by Exam:Physics(19)Chemistry(6)PHYSICS(1)

About Bohr Model — practice questions, PYQs & concepts

Bohr Model is a frequently-tested topic on Physics, Chemistry, PHYSICS. ExamTest.live currently lists 26 Bohr Model questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

Bohr Model weight in competitive exams

Across our Bohr Model question bank, the largest sources are Physics (19), Chemistry (6) and PHYSICS (1). Click any exam chip above to drill down to that exam-specific question set.

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All Bohr Model Questions(1–26 of 26)

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Q1mediummcqPhysicsJEE Main2026
In a hydrogen like atom electron makes transition from an energy level with quantum number to another with quantum number . If , the frequency of radiation emitted is proportional to:
Q2mediummcqChemistryJEE Main2026
Energy of an electron is given by . Wavelength of light required to excite an electron in a hydrogen atom from level to will be ( and ):
Q3mediummcqPhysicsFIITJEE AIEEE 2011 (Set Q)2026
Energy required for the electron excitation in from the first to the third Bohr orbit is:
Q4mediummcqChemistryAIEEE2026
Ionisation energy of is . The energy of the first stationary state () of is:
Q5hardmcqPhysicsAIEEE2026
Suppose an electron is attracted towards the origin by a force where is a constant. By applying Bohr model, the radius and kinetic energy of the orbital are:
Q6hardmcqPhysicsAIEEE 20032026
If the binding energy of the electron in a hydrogen atom is , the energy required to remove the electron from the first excited state of is:
Q7mediummcqChemistryNEET (UG) 20242026
The energy of an electron in the ground state () for ion is . Then, the energy for an electron in state for ion in is:
Q8mediummcqPhysicsNEET 20232026
The radius of the innermost orbit of a hydrogen atom is . What is the radius of the third allowed orbit of the hydrogen atom?
Q9mediummcqPhysicsNEET 20222026
Let and be the energy of an electron in the first and second excited states of hydrogen atom, respectively. According to the Bohr’s model of an atom; the ratio is:
Q10easymcqPhysicsNEET 2020 E12026
For which one of the following, Bohr model is not valid?
Q11mediummcqPHYSICSNEET 20192026
The radius of the first permitted Bohr orbit for the electron in a hydrogen atom equals and its ground state energy equals . If the electron in the hydrogen atom is replaced by a muon () [charge same as electron and mass ], the first Bohr radius and ground state energy will be ( represents the mass of an electron):
Q12easymcqPhysicsNEET (UG) 20182026
The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is:
Q13hardmcqPhysicsPhysics
0% accuracy
A particle of mass is moving around the origin with a constant force pulling it towards the origin. If Bohr model is used to describe its motion, the radius of the orbit and the particle's speed in the orbit depend on as:
Q14hardmcqPhysicsPhysics
3% accuracy
Energy and radius of first Bohr orbit of and are:[Given ]
Q15mediummcqPhysicsPhysics
3% accuracy
The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes and transitions, respectively, is:
Q16mediummcqPhysicsPhysics
3% accuracy
De-Broglie wavelength of an electron orbiting in the state of hydrogen atom is close to (Given Bohr radius ):
Q17hardmcqPhysicsPhysics
3% accuracy
A model for quantized motion of an electron in a uniform magnetic field states that the flux passing through the orbit of the electron is where is an integer, is Planck's constant and is the magnitude of electron's charge. According to the model, the magnetic moment of an electron in its lowest energy state will be ( is the mass of the electron):
Q18easymcqPhysicsPhysics
0% accuracy
The energy of second Bohr orbit of the hydrogen atom is -328 kJ mol-1 ; hence the energy of fourth Bohr orbit would be :
Q19mediummcqChemistryChemistry
Based on the equation , which of the following conclusions is not correct?
Q20mediummcqChemistryChemistry
According to the Bohr Theory, which transition in the hydrogen atom will give rise to the least energetic photon?
Q21mediummcqPhysicsPhysics
Which is not a possible energy for a photon emitted by -atom?
Q22mediummcqPhysicsPhysics
An electron in -atom jumps from to ground state. Work function of material is and stopping potential is . The value of is:
Q23easymcqPhysicsPhysics
The energy of a hydrogen atom in the ground state is . The energy of a ion in the first excited state will be:
Q24mediummcqPhysicsPhysics
The ionization energy of the electron in the hydrogen atom in its ground state is . The atoms are excited to higher energy levels to emit radiations of wavelengths. Maximum wavelength of emitted radiation corresponds to the transition between:
Q25easymcqPhysicsPhysics
The total energy of electron in the ground state of hydrogen atom is . The kinetic energy of an electron in the first excited state is:
Q26mediummcqChemistryChemistry
The most probable radius (in ) for finding the electron in is:

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