Light from some stars shows an apparent change in frequency because of:
A) interference
B) refraction by layers of air
C) diffraction
D) reflection
E) relative motion

Name: Light from some stars shows an apparent change in frequency because of: A) interference B) refraction by layers of air C) diffraction D) reflection E) relative motion
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Question

Quizplus · Accepted Answer

The apparent change in frequency of light from stars is due to the Doppler effect, which is a result of the relative motion between the star and the observer.

Light from Some Stars Shows an Apparent Change in Frequency