Laser beams are used to measure long distances because [DCE 2002, 03 – McqOptions

MCQOPTIONS

1.	Laser beams are used to measure long distances because [DCE 2002, 03]
A.	They are monochromatic
B.	They are highly polarised
C.	They are coherent
D.	They have high degree of parallelism
Answer» E.

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