Because of the Doppler effect,a light- or sound-emitting object moving toward you has a ________ than a stationary object.
A) higher amplitude
B) lower frequency
C) lower amplitude
D) higher frequency

Question

Quizplus · Accepted Answer

According to the Doppler effect, when an object emitting waves (such as light or sound) is moving towards the observer, the observed frequency of the waves will be higher than the emitted frequency. This means that the wavelength becomes shorter, which results in a higher frequency. Therefore, a light- or sound-emitting object moving towards the observer has a higher frequency than a stationary object.

Because of the Doppler Effect,a Light- or Sound-Emitting Object Moving