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Friday, 9 October

JEE Main 2025 · PhysicsMultiple choiceAssertion–reasonEasyConceptual

JEE Main 3 April 2025, Shift 2, Physics Q44

Question 44 of 75 in this shift, Physics question 19 of 25, Section A.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : The Bohr model is applicable to hydrogen and hydrogen-like atoms only. Reason R : The formulation of Bohr model does not include repulsive force between electrons. In the light of the above statements, choose the correct answer from the options given below
  1. (1)Both A and R are true and R is the correct explanation of AOfficial answer
  2. (2)Both A and R are true but R is NOT the correct explanation of A
  3. (3)A is true but R is false
  4. (4)A is false but R is true

Official answer

Option 1

NTA final key.

Chapter
Atoms
Topic
Bohr's Atomic Model
Idea tested
Limitations of Bohr's Model

Same topic in other shifts

All Bohr's Atomic Model questions
  1. 2 Apr 2026, Shift 1 · Q44Angular momentum of an electron in a hydrogen atom is 3hπ\frac{3h}{\pi}, then the energy of the electron is ______ eV.EasySingle correct
  2. 2 Apr 2026, Shift 2 · Q47Using Bohr's model, calculate the ratio of the magnetic fields generated due to the motion of the electrons in the 2nd and 4th orbits of…MediumNumerical value
  3. 5 Apr 2026, Shift 1 · Q36In the hydrogen atom, the electron makes a transition from the higher orbit (ii) to a lower orbit (ff). The ratio of the radius of the…EasySingle correct
  4. 6 Apr 2026, Shift 1 · Q44The ratio of momentum of the photons of the 1st1^{\mathrm{st}} and 2nd2^{\mathrm{nd}} line of Balmer series of Hydrogen atoms is…MediumSingle correct
  5. 2 Apr 2025, Shift 1 · Q43Considering Bohr's atomic model for hydrogen atom : (A) the energy of H atom in ground state is same as energy of He+\mathrm{He^+} ion in…EasyOther
  6. 2 Apr 2025, Shift 2 · Q40Assuming the validity of Bohr's atomic model for hydrogen like ions the radius of Li++\mathrm{Li^{++}} ion in its ground state is given by…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.