Physics - Modern Physics Question with Solution | TestHub
Electrons having de-Broglie wavelength as shown in column-I are incident on a sample of hydrogen gas in ground state. The atoms then emit photons corresponding to some series. Match the wavelength of incident electrons with series emitted.
Options:
Answer:
Solution:
The de-Broglie wavelength relates to the electron's energy, influencing the excited state of hydrogen. Different energy levels correspond to different spectral series (Lyman, Balmer, Paschen). Higher energy (shorter wavelength) can lead to transitions corresponding to multiple series.
Detailed Solution:
Column-I: Wavelength of incident electrons and corresponding energy levels.
Column-II: Series emitted by Hydrogen atom.
(A) : Electron excites H atom such that it emits Lyman, Balmer, Paschen and Brackett series.
(B) : Electron excites H atom such that it emits only Lyman series.
(C) : Electron excites H atom such that it emits Lyman, Balmer and Paschen series.
(D) : Electron excites H atom such that it emits Paschen and Brackett series.