Question

Which lights will flash for approx 10 minutes prior to the completion of PAL

a) Green
b) Red
c) White
d) Blue

Answer 1

The red and green lights will flash prior to the completion of PAL.

Step-by-step explanation:

In the given options, the lights that will flash for approximately 10 minutes prior to the completion of PAL are the red and green lights, as stated in option (d).

To understand why the red and green lights will flash, let's consider the concept of persistence of vision. When lights of different colors flash alternately at a rapid rate, our eyes perceive a combined color. In this case, the red and green lights will create a yellow color when they flash together.

Therefore, the correct answer is option (d) - Red and green lights.