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?
Answer & explanation
Correct answer: option 4
The three characteristics of laser are:
- Superior Monochromatism: Laser lights are single wavelength light.
- Superior Directivity: Laser beam is emitted in a specific direction.
- Superior Coherence: Laser lights have the same phase difference.
- Collimation: All rays are parallel to each other and do not diverge significantly even over long distances.