Confidence in the correctness of the answer for the previous question can be increased by recognizing that
A) if the emitter moves toward the receiver with a speed equal to that of sound, the frequency received is very large indeed.
B) if the receiver moves away from the emitter with a speed equal to that of sound, the frequency received is very small indeed.
C) both of the first two answers are relevant to the choice of the correct answer to the previous question.
D) none of the above.

Question

Quizplus · Accepted Answer

Both A and B describe situations that are consistent with the Doppler effect, which is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. A describes a scenario where the frequency increases due to the emitter moving towards the receiver, and B describes a scenario where the frequency decreases due to the receiver moving away from the emitter. Both are correct applications of the Doppler effect principles.

Confidence in the Correctness of the Answer for the Previous