Q28.In a hydrogen like atom electron makes transition from an energy level with quantum number n to another with quantum number (n −1). If n >> 1, the frequency of radiation emitted is proportional to : (1) 1 (2) 1 n3/2 n3 (3) 1 (4) 1 n n2
What This Question Tests
This question requires relating the energy difference between Bohr orbits to the frequency of emitted radiation, particularly for large quantum numbers where an approximation is useful.
Concepts Tested
Formulas Used
E_n = -13.6 Z²/n² eV
ΔE = hf
📚 NCERT Sections This Tests
12.3 — A Difference Of 2.3 Ev Separates Two Energy Levels In An Atom. What
Physics Class 12 · Chapter 12
12.3 A difference of 2.3 eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom make a transition from the upper level to the lower level?
12.5 — A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 · Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
12.7 — The Radius Of The Innermost Electron Orbit Of A Hydrogen Atom Is
Physics Class 12 · Chapter 12
12.7 The radius of the innermost electron orbit of a hydrogen atom is 5.3×10–11 m. What are the radii of the n = 2 and n =3 orbits?
📋 Question Details
- Chapter
- Atoms
- Topic
- Bohr's Model, Spectral Series
- Year
- 2013
- Shift
- 07 Apr
- Q Number
- Q28
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 12: Atoms
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