Question

what is wave front ? How is it related to rays of light ? What is the shape of the wave front at a point far away from the source of light​

Answer 1

Answer:

A Wavefront is defined as the locus of points that are in the same phase (a line or a surface) for a wave propagating by a source of the disturbance. Wavefronts are always perpendicular to rays of light. For a point far away from the source of the light wavefront is planar in shape as rays are parallel to each other.