Q25.In the line spectra of hydrogen atom, difference between the largest and the shortest wavelengths of the Lyman ∘ ∘ series is 305 A . The corresponding difference for the Paschan series in A is:________
What This Question Tests
This question requires calculating the difference between the largest and shortest wavelengths for both Lyman and Paschen series using the Rydberg formula for the hydrogen atom.
Concepts Tested
Formulas Used
1/lambda = R_H (1/n_1^2 - 1/n_2^2)
📚 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.
12.8 — A 12.5 Ev Electron Beam Is Used To Bombard Gaseous Hydrogen At
Physics Class 12 · Chapter 12
12.8 A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. What series of wavelengths will be emitted?
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
- Hydrogen Spectrum
- Year
- 2020
- Shift
- 04 Sep Shift 1
- Q Number
- Q25
- Type
- Numerical
- NCERT Ref
- Class 12 Physics Ch 12: Atoms
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