Zeeman effect corresponds to the splitting of spectral lines in the presence of:

Question

Question

This question was previously asked in

DSSSB PGT Chemistry (Female) Official Paper (Held On: 06 Jul, 2018 Shift 1)

Answer 1

CONCEPT:

Zeeman Effect

The Zeeman effect refers to the splitting of spectral lines of atoms or molecules when subjected to an external magnetic field.
It occurs due to the interaction between the magnetic field and the magnetic moment associated with the angular momentum of electrons.
In a magnetic field, the energy levels of electrons are split into multiple sublevels, causing the observed spectral lines to split into components.

EXPLANATION:

Zeeman front page

The splitting of spectral lines due to the Zeeman effect is caused by the magnetic field.
An external electric field would cause a different phenomenon known as the Stark effect, not the Zeeman effect.
Both electric and magnetic fields acting together do not describe the Zeeman effect, as the Zeeman effect is specifically associated with magnetic fields.
Therefore, the correct answer is option 2: Magnetic field.

Thus, the Zeeman effect corresponds to the splitting of spectral lines in the presence of a magnetic field.