After a wave passes through a medium, particles in the medium

Question

anonymous · Answer

(A) are permanently displaced in a direction opposite to the direction of the wave. 
(B) remain in the new location. 
(C) are moved along with the wave. 
(D) return to the original position.

anonymous · Answer

I don't understand this question. I really need help on this. @ganeshie8 @hartnn @ParthKohli @paki @pooja195 @Abhisar @e.mccormick

michele_laino · Answer

If the wave is due to a passage of a charged particle, then, using the Fermi model, we can conclude D

michele_laino · Answer

I give you the reference:
E. Segrè "Nuclei and Particles" Benjamin 1977

michele_laino · Answer

In general, during energy transfer due to a passage of a charged particle, it is used the elastically bonded particle model.

anonymous · Answer

Thank You!!

michele_laino · Answer

Thank you! @happyrosy