Question

what is time??/ what are its funfdamental

Answer 1

Time is the quantity that elapses between two instants or two events.
Time always progresses into future in one way and increases in value.

Fundamental units are : Seconds.
derived units are nanoseconds, ms, minutes, hour, day, year, century,decade, fortnight, millennium

Answer 2

in the clock which we see is time. its fundamental are: second, minute,hour, day, week,year etc...