State the principle which helps us to determine the shape of the wavefront at a later time from its given shape at any time. Apply this principle to(i) Show that a spherical/ plane wavefront contiunes to propagate forward as a spherical/plane wave front. (ii) Derive Snell’s law of refraction by drawing the refracted wavefront corresponding to a plane wavefront incident on the boundary separating a rarer medium from a denser medium. ?
Prakash pandey , 10 Years ago
Grade 12