What Is the Zeeman Effect

Multiple Choice

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.