What is the Zeeman effect?
A) When a light source is moving relative to an observer,the wavelengths of its spectral lines are shifted to longer or shorter wavelengths.
B) When the temperature of a light source is increased,the wavelength of maximum emission decreases.
C) When light shines on a metal surface,electrons are ejected from the metal only if the wavelength of the light is shorter than some critical wavelength.
D) When a light source is located in a magnetic field,the spectral lines it emits are split into two or more components.

Question

Quizplus · Accepted Answer

The Zeeman effect is the splitting of spectral lines that occurs when a light source is located in a magnetic field. This effect is caused by the interaction between the magnetic field and the electrons in the atoms or molecules of the light source. As a result of this interaction, the spectral lines that the light source emits are split into two or more components, depending on the strength of the magnetic field. This effect was first discovered by Dutch physicist Pieter Zeeman in 1896.

What Is the Zeeman Effect