Q26.The electron of a hydrogen atom makes a transition from the (n + 1)th orbit to the nth orbit. For large n the wavelength of the emitted radiation is proportional to (1) n (2) n3 (3) n4 (4) n2
What This Question Tests
This question requires using the Rydberg formula for hydrogen atom transitions and making an approximation for large 'n' to determine the proportionality of the emitted wavelength.
Concepts Tested
Formulas Used
1/λ = RZ²(1/n_f² - 1/n_i²)
E_n = -13.6/n²
📚 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
- Bohr's model, spectral series
- Year
- 2012
- Shift
- 07 May Online
- Q Number
- Q26
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 12: Atoms
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