As a light source blinking at a steady rate approaches you at an increasing speed (accelerating toward you), the rate at which the blinks encounter you
A)increases.
B)decreases.
C)remains the same.

Question

Quizplus · Accepted Answer

The rate at which the blinks encounter you increases due to the Doppler effect, which causes the frequency of the light (or in this case, the blinking rate) to increase as the source moves closer to the observer.

As a Light Source Blinking at a Steady Rate Approaches