Learn

Friday, 9 October

JEE Main Physics · Atoms

Bohr Orbit Radius

Bohr Orbit Radius (Atoms) was asked 2 times in 2 JEE Main shifts, 2023–2025, out of the 42 shifts Lumi analysed. 1 of the 2 had a numerical answer.

Times asked
2
in 2 shifts
Years
2023–2025
Usual format
Numerical value
Calculation
Pattern
Occasional
repeats across shifts

How it is asked

  • Ratio of quantity in two orbits
  • Orbit radius of hydrogen-like ion

Difficulty

Easy 2Medium 0Hard 0

Where it sits

Chapter: Atoms. Topic: Bohr's Atomic Model, 25 questions over 17 ideas.

Other repeat ideas in this topic

Every time it came

All 2 questions

Newest first, each with its options and official answer.

  1. 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
  2. 6 Apr 2023, Shift 1 · Q53The radius of fifth orbit of the Li++\mathrm{Li^{++}} is ____________ ×10−12\times10^{-12} m. Take: radius of hydrogen atom = 0.51 ÅEasyNumerical value