Question

laser beam is highly coherent so it can be used in​

Answer 1

Answer:

laser beam is highly coherent so it can be used in Spatial coherence .

Answer 2

Laser beam is highly coherent in nature as the frequency and wavelength are equal for this source.
So it can be used in,

• It is used in compact disc, bar reader.
• it also helps in to prepare holograms
• It is also used in DNA sequencing instruments.
• Also used for optical communication, skin treatment, in some surgery it is also helpful.