The speed of the wave packet that corresponds to a moving particle is
A) less than the speed of light.
B) equal to the speed of light.
C) greater than the speed of light.
D) Any of these choices could be correct, depending on the frequency.

Question

Quizplus · Accepted Answer

According to the theory of relativity, no particle with mass can travel at or faster than the speed of light. Since the wave packet corresponds to a moving particle, its speed must be less than the speed of light. Therefore, choice A is the best choice.

The Speed of the Wave Packet That Corresponds to a Moving