A wavefront is defined as a surface of ______________ phase

Question

Question

This question was previously asked in

SSC Scientific Assistant Physics Official Paper (Held On: 22 Nov 2017 Shift 1)

Answer 1

CONCEPT:

Wavefront: The locus of all particles in a medium, vibrating in the same phase/constant phase is called waveFront.
- The direction of propagation of light (ray of light) is perpendicular to the waveFront.
- Every point on the given wavefront acts as a source of a new disturbance called secondary wavelets which travel in all directions with the velocity of light in the medium.
- A surface touching these secondary wavelets tangentially in the forward direction at any instant gives the new wavefront at that instant. This is called a secondary wavefront.

F2 P.Y 23.5.20 Pallavi D 5

EXPLANATION:

A wavefront is defined as a surface of constant phase. So option 2 is correct.