Question: Q. 1. Define the term wavefront.
R [O.D. Comptt. I, II, III 2014]
Show Answer
Solution:
Ans. The locus of all points those are in the same phase. Or
The surface of constant phase.
[CBSE Marking Scheme 2014]
Detailed Answer :
Wavefront is locus of all points in which light wave are in same phase. Propagation of wave energy is perpendicular to the wavefront.
[AI Q. 2. Differentiate between a ray and a wavefront.
U|P’Delhi 2009]
Ans. A ray is an imaginary path along which light energy propagates. Wavefront is locusof all points in which light waves are in same phase.
Propagation of wave energy is perpendicular to the wavefront. Hence ray is also perpendicular to the wavefront.
