In the context of wave functions, does the medium in which a wave travels move along with the wave itself?

• A. Yes, the medium moves in the same direction and speed as the wave.
• B. No, the medium oscillates locally but does not travel with the wave.
• C. Only in electromagnetic waves does the medium move with the wave.
• D. The medium remains completely stationary and is unaffected by the wave.

Answer: (B)

Verified step by step guidance

1. Understand the nature of mechanical waves: Mechanical waves require a medium to travel through, such as air, water, or a solid material.
2. Recognize that in mechanical waves, the particles of the medium oscillate or vibrate around their equilibrium positions but do not travel with the wave itself.
3. Recall that the wave propagates energy through the medium by these local oscillations, but the medium's particles return to their original positions after the wave passes.
4. Contrast this with electromagnetic waves, which do not require a medium and propagate through oscillating electric and magnetic fields in space.
5. Conclude that the medium does not move along with the wave; instead, it oscillates locally, transmitting the wave energy without a net movement of the medium.