Question

What is huygen's wave Theory ??

Answer 1

Huygens assumed that a body emits light in the form of waves.
According to him, each point source of light is a center of disturbance from which waves spread in all directions. The locus of all the particles of the medium vibrating in the same phase at a given instant is called the wavefront.

Answer 2

Hi friend,

Your answer:

Huygen's hypothesis or wave theory states that "every point on a wavefront of light is a source of wavelets which have the same speed as that of the original wave and all these wavelets which form the new wavefront." 

Hope it helps!