JEE Main 2026 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 2 April 2026, Shift 2, Physics Q47

Question 47 of 75 in this shift, Physics question 22 of 25, Section B.

Using 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 hydrogen atom

Official answer

NTA final key.

Chapter: Atoms
Topic: Bohr's Atomic Model
Idea tested: Magnetic Field and Dipole Moment

Same topic in other shifts

All Bohr's Atomic Model questions

2 Apr 2026, Shift 1 · Q44Angular momentum of an electron in a hydrogen atom is $\frac{3h}{\pi}$ , then the energy of the electron is ______ eV.EasySingle correct
5 Apr 2026, Shift 1 · Q36In the hydrogen atom, the electron makes a transition from the higher orbit ( $i$ ) to a lower orbit ( $f$ ). The ratio of the radius of the…EasySingle correct
6 Apr 2026, Shift 1 · Q44The ratio of momentum of the photons of the $1^{\mathrm{st}}$ and $2^{\mathrm{nd}}$ line of Balmer series of Hydrogen atoms is…MediumSingle correct
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 $\mathrm{He^+}$ ion in…EasyOther
2 Apr 2025, Shift 2 · Q40Assuming the validity of Bohr's atomic model for hydrogen like ions the radius of $\mathrm{Li^{++}}$ ion in its ground state is given by…EasySingle correct
3 Apr 2025, Shift 2 · Q44Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : The Bohr model is…EasyAssertion–reason

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.