Question

What is meant by Coherent Sources?

Answer 1

1. The source which emits a light wave with the same frequency, wavelength, and phase or has a constant phase difference is known as a coherent source.
2. A coherent source forms sustained interference patterns when the waves superimpose and the positions of maxima and minima are fixed.
3. Laser light is an example of a coherent light source. Laser light has the same frequency and phase as ordinary light.
4. In physics, coherence refers to the ability of waves to interact because they have a continuous phase relationship.

Hence, coherent sources are light sources that emit waves with the same frequency and a zero or continuous phase difference.