Question

What type of wave front will emerge from a distant light source? Use Huygens’ principle to

verify the laws of refraction​

Answer 1

Answer:

plane wavefront

(i) From a point source, the wavefront is diverging spherical wavefront. (ii) From a distant light source, the wavefront is plane wavefront

Answer 2

Answer:

According to Huygens principle A'B' is the new position of wavefront AB in the second medium. Hence A'B' will be the refracted wavefront. First law: As AB, A'B' and surface XY are in the plane of paper, therefore the perpendicular drawn on them will be in the same plane.