Question

According to Huygens principle, ______.

Options

• Each point on a wavefront is travelling at any speed

• Each point on a wavefront is a source of secondary waves

• No point on a wavefront is a source of secondary waves

• Each point on a wavefront is a sink of secondary waves

Answer 1

According to Huygens principle, each point on a wavefront is a source of secondary waves.

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.