Question

properties or characterise of laser plz give answer short notes​

Answer 1

Answer:

Laser radiation has the following important characteristics over ordinary light source. They are: i) monochromaticity, ii) directionality, iii) coherence and iv) brightness. (i) Monochromaticity: A laser beam is more or less in single wavelength. ... So, laser radiation is said to be highly monochromatic.