54. One millisecond is a.1 second b.10th of a seconds c.1000th of a seconds d.10000th of a seconds
Correct choice is option C , Explanation - A millisecond (ms or msec) is one thousandth of a second and is commonly used in measuring the time to read to or write from a hard disk or a CD-ROM player or to measure packet travel time on the Internet. For comparison, a microsecond (us or Greek letter mu plus s) is one millionth (10-6) of a second.
