Consider the following statements regarding a beam of LASER:

(I) It is highly monochromatic
(II) It is an electromagnetic radiation from a source
(III) It travels with the speed of light

Which of the statements given above are correct?

I, II and III

The three characteristics of laser are:

1. Superior Monochromatism: Laser lights are single wavelength light.
2. Superior Directivity: Laser beam is emitted in a specific direction.
3. Superior Coherence: Laser lights have the same phase difference.
4. Collimation: All rays are parallel to each other and do not diverge significantly even over long distances.