The Doppler effect states that the motion of any object can
A)shift the wavelength of spectral lines.
B)change the speed of light emitted from the object.
C)enhance the chemical composition of the object.
D)make the object appear hotter.
E)make the object appear cooler.

Question

Quizplus · Accepted Answer

The Doppler effect is the apparent change in the frequency or wavelength of a wave caused by the motion of the observer or the source. In astronomy, it is used to determine the velocity of stars and galaxies based on the shift in their spectral lines. This shift is caused by the Doppler effect and occurs because the velocity of the object changes the apparent wavelength of the light it emits. Therefore, the correct choice is A, as the Doppler effect does shift the wavelength of spectral lines. Choices B, C, D, and E are not directly related to the Doppler effect.

The Doppler Effect States That the Motion of Any Object