Splitting of spectral lines when atoms are subjected to strong electric filed is called_________________?
Correct answer: B. Stark effect
- A. Zeeman effect
- B. Stark effect
- C. Photoelectric effect
- D. Compton effect
Explanation
The Stark effect is the splitting or shifting of spectral lines when atoms are placed in a strong electric field. The Zeeman effect is the corresponding effect caused by a magnetic field. Students may choose a because both effects involve spectral-line splitting, but Zeeman splitting is due to a magnetic, not an electric, field.
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About Spectrum of Hydrogen
The hydrogen spectrum consists of discrete emission lines produced when electrons fall between quantised energy levels and release photons. Questions use the Rydberg equation, photon energy and wavelength, and identify the Lyman, Balmer, Paschen, Brackett and Pfund series, which differ from continuous spectra.
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