If a light signal and a radio signal were emitted simultaneously from Alpha Centauri,the first to reach Earth would be the
A)radio signal.
B)light signal.
C)both would reach Earth at the same time.

Question

Quizplus · Accepted Answer

Both light and radio signals are electromagnetic waves and travel at the same speed, the speed of light, in a vacuum. Therefore, they would reach Earth at the same time.

If a Light Signal and a Radio Signal Were Emitted