Question

Splitting of spectral lines under the influence of magnetic field is called :

• A. Stark effect
• B. Zeeman effect
• C. Photoelectric effect
• D. Screening effect.

Answer 1

The correct option is B Zeeman effect

Stark effect- the splitting of spectral lines in the presence of an electric field.

Zeeman effect- the splitting of spectral lines in the presence of magnetic field

Photoelectric effect-ejection of electrons from the metal surface as soon as the beam of light of appropriate energy (above a threshold) strikes the surface.

Screening effect- The effective nuclear charge experienced by a valence electron in an atom will be less than the actual charge on the nucleus because of “shielding” or “screening” of the valence electron from the nucleus by the intervening core electrons.