According to Huygen's Principle, each point of the wavefront is the source of :
Answer & explanation
Correct answer: option 2
According to Huygen's Principle,
- Each point of the wavefront is the source of secondary disturbance and wavelets emanating from these points spread out in all directions with the speed of the wave.
- A surface touching these secondary wavelets, tangentially in the forward direction at any instant gives the new wavefront at that instant. This is called secondary wavefront.