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Answer» The phase diference between any two points situated on the same WAVEFRONT is zero. First of all, what is WAVEFRONT ? - Wavefront is a term extensively used in study of wave optics.
- Now, wavefront is defined as the locus of all those vibrating PARTICLES of a wave oscillating in the same phase.
- As the definition states , all the particles in a wavefront have the same phase and HENCE the phase difference between them will be zero.
- Wavefront is usually found placed perpendicular to the direction of propagation of the wave.
Lets discuss about a few wavefronts : - For a point source we get to SEE spherical wavefronts at various radii.
- For a line source we get to see cylindrical wavefronts at various radii.
- For sources placed at INFINITY we get plane wavefronts at various distances.
Hope It Helps.
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