1.

A laser beam is used for locating distant objects because (a) it is monochromatic (b) it is not chromatic (c) it is not observed (d) it has small angular spread.

Answer»

A laser beam is used for LOCATING distant OBJECTS because it does not spread as it MOVES through the MEDIUM and has a very SMALL angular spread. D.



Discussion

No Comment Found

Related InterviewSolutions