The Doppler effect is the
A) change in the wavelength of peak emission of light when the source temperature changes.
B) increase in the observed wavelength of light if the source of light is moving away from you.
C) increase in the observed wavelength of light if the light source is moving toward you.
D) splitting of spectral lines into two or more wavelengths because the source of the light is in a strong magnetic field.

Question

Quizplus · Accepted Answer

The Doppler effect refers to the change in the observed frequency (or wavelength) of a wave in relation to an observer who is moving relative to the wave source. Specifically, if the source of light is moving away from the observer, the observed wavelength increases (redshift).

The Doppler Effect Is the