Yash Sharma
wave front is a imaginary surface representing corresponding points of a wave that vibrate in same phase for example, a wavefront could be the surface over which the wave has a maximum or a minimum value. When a wavefront reaches various points of an arbitrary surface ,they act as new sources of light waves emitting spherical waves called secondary wavelets and disturbance beyond the surface results from the superimposition of these secondary wavelets forming an another wavefront.In simple words,a wavefront is the result of superimposition of various wavelets.