If the frequency of blinks for a light source appears to double as the light source approaches you, the frequency of blinks as it moves away from you at the same speed
A)is halved.
B)is doubled.
C)stays the same.

Question

Quizplus · Accepted Answer

This phenomenon is known as the Doppler effect, where the perceived frequency of a sound or light wave changes as the source moves towards or away from the observer. When the light source moves away from the observer at the same speed, the frequency of blinks will decrease or appear to be lower, causing it to be halved.

If the Frequency of Blinks for a Light Source Appears