Laser beams are used to measure long distance because:

Question

Laser beams are used to measure long distance because: (A) They are monochromatic (B) They are highly polarised (C) They have high wavelength (D) They have high degree of parallelism

Tardigrade Admin · Accepted Answer

Laser beam are monochromatic and coherent and it is perfectly parallel so that they are narrow and can travel a long distance without spreading.

Q. Laser beams are used to measure long distance because:

They are monochromatic

They are highly polarised

They have high wavelength

They have high degree of parallelism

Laser beam are monochromatic and coherent and it is perfectly parallel so that they are narrow and can travel a long distance without spreading.