In the Doppler effect for electromagnetic waves,which of the following gives the greatest shift in frequency?
A)the source moving toward the non-moving observer at speed v
B)the observer moving toward the non-moving source at speed v
C)the source moving toward the approaching observer,both at speed v/2
D)All of the above give the same shift.

Question

Quizplus · Accepted Answer

The Doppler effect for electromagnetic waves, such as light, does not depend on the relative motion of the source and observer in the same way it does for sound. The observed frequency shift is determined by the relative velocity between the source and the observer. Therefore, whether the source is moving towards a stationary observer, the observer is moving towards a stationary source, or both are moving towards each other with equal but halved speeds, the relative velocity—and thus the frequency shift—is the same in all scenarios.

In the Doppler Effect for Electromagnetic Waves,which of the Following