Blue and red lasers (with wavelengths 475 nm and 633 nm, respectively) are shone through a diffraction grating towards a wall 4.2 m away. Each laser produces a pattern of dots on the wall and the dots from both patterns are very close together in three locations, each separated by 3.1 m.

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line