Q27.In a hydrogen like atom, when an electron jumps from the M-shell to the L-shell, the wavelength of emitted radiation is L. If an electron jumps from N -shell to the L -shell, the wavelength of emitted radiation will be: (1) 27 λ (2) 16 λ 20 25 (3) 25 λ (4) 20 λ 16 27
What This Question Tests
This problem applies the Rydberg formula or energy level transitions for hydrogen-like atoms to find the wavelength of emitted radiation for different electron jumps.
Concepts Tested
Formulas Used
1/λ = R Z² (1/n₁² - 1/n₂²)
E = -13.6 Z²/n² eV
📚 NCERT Sections This Tests
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?
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?
📋 Question Details
- Chapter
- Atoms
- Topic
- Hydrogen-like atoms (Bohr's model)
- Year
- 2019
- Shift
- 11 Jan Shift 2
- Q Number
- Q27
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 12: Atoms
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