Question

If a light signal and a radio signal were emitted simultaneously from the moon, the first signal to reach Earth would be: A) Light signal B) Radio signal

Answer 1

Both.

Step-by-step explanation:

Both visible light and radio signal or radio waves are the forms of the electromagnetic spectrum and in vacuum, all electromagnetic waves travel at the same speed which is equal to the speed of light or at the speed of 3x108 m/ s. So, both signals will reach at the same time.