A progressive wave travels through a medium.
The diagram shows how the displacement of particles in the medium varies with distance along the wave at a specific instant.
Which row in the table correctly describes both w w\,w and zzz?
w=2×w = 2 \timesw=2× amplitude, z=0.5×z = 0.5 \timesz=0.5× wavelength
w=2×w = 2 \timesw=2× amplitude, z=1.0×z = 1.0 \timesz=1.0× wavelength
w=1×w = 1 \timesw=1× amplitude, z=0.5×z = 0.5 \timesz=0.5× wavelength
w=1×w = 1 \timesw=1× amplitude, z=1.0×z = 1.0 \timesz=1.0× wavelength