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The ratio of minimum wavelengths of Lyman and Balmer series will be
Options
(a) 5
(b) 10
(c) 1.25
(d) 0.25
Correct Answer:
0.25
Explanation:
Minimum wavelength is for higher energy n = 1 → n = ∞, energy = E₀.
n = 2 → n = ∞, energy = E₀/4.
.·. Balmer line has 4 times the wavelength.
.·. Ratio of minimum wavelength is (1/4) = 0.25
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Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If an electron and a proton have the same de-Broglie wavelength, then the kinetic
- If Q, E and W denote respectively the heat added, change in internal energy
- The photoelectric threshold wevelength for potassium (work function being 2 eV) is
- Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
- Thin uniform rod of length L, cross-sectional area A and density ρ is rotated
Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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