Difference Between Wavefront and Ray
A wavefront is the locus of all points that are in the same phase of vibration.
A ray is an imaginary line that represents the direction of wave propagation.
It is always perpendicular to the direction of wave propagation.
It is always perpendicular to the wavefront.
Examples: Plane wavefront, spherical wavefront.
Used to represent light beams in geometrical optics.