According to Huygens' principle, a wavefront propagates through a medium by

Options

A. pushing medium particles
B. propagating through medium with speed of light
C. carrying particles of same phase along with it
D. creating secondary wavelets which forms a new wavefront

Answer

D

Explanation

According to Huygens' principle, each point of the wavefront is the source of a secondary disturbance and the wavelets emanating from these points spread out in all directions with the speed of the wave. These wavelets emanating from the wavefront are usually referred to as secondary wavelets and it we draw a common tangent to all these spheres, we obtain the new position of the wavefront at a later time.