JEE Main 2025 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 3 April 2025, Shift 2, Physics Q50

Question 50 of 75 in this shift, Physics question 25 of 25, Section B.

An electron in the hydrogen atom initially in the fourth excited state makes a transition to

\mathrm{n^{th}}

energy state by emitting a photon of energy 2.86 eV. The integer value of n will be __________.

Official answer

NTA final key.

Chapter: Atoms
Topic: Bohr's Atomic Model
Idea tested: Identifying Transitions from Photon Energy

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
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
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

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.