Question

what is the si unit of time?namw it's four multiples?​

Answer 1

Answer:

$The second, symbol s, is the \\ SI unit of time. It is defined \\ by taking the fixed numerical value \\ of the caesium frequency Cs. \\ , the unperturbed ground-state \\ hyperfine transition frequency \\ of the caesium-133 atom, to \\ be 9 192 631 770 when \\ expressed in the unit Hz, \\ which is equal to s–1.$

$i \: hope \: its \: helps \: you$

Answer 2

Answer:

SI unit of time is- second(s)

Multiple of second are usually counted in hours and minutes. Fractions of a second are usually counted in tenths or hundredth. In scientific work, small fractions of a second are counted in milliseconds (thousandths), microsecond (millionths), nanoseconds (billionths), and sometimes smaller units of a second