Q27.The ratio of wavelength of spectral lines Hα and Hβ in the Balmer series is 20x . The value of x is _____.
What This Question Tests
Tests the ability to use the Rydberg formula to calculate wavelengths for spectral lines in the Balmer series and find their ratio.
Concepts Tested
Formulas Used
1/λ = RZ²(1/n₁² - 1/n₂²)
📚 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?
12.8 — 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?
📋 Question Details
- Chapter
- Atoms
- Topic
- Bohr's model, Hydrogen spectrum
- Year
- 2023
- Shift
- 08 Apr Shift 2
- Q Number
- Q27
- Type
- Numerical
- NCERT Ref
- Class 12 Physics Ch 12: Atoms
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