Question

name the SI unit of time and define it ?​

Answer 1

$\bold\color{red} \huge \fbox{HEY}$

$\huge \underline\color{blue} \fbox{ANSWER..}$

$<b><i>$

it's second. It is based on spinning motion of outermost electron The second is duration in which the outermost electron of cesium-133 atom makes 9.2x10 ^ 9 vibrations. There is a primary standard for the unit of time The CESIUM ATOMIC FREQUENCY STANDARD also called as Atomic clock for this purpose in the U.S.A.It's second. It is based on spinning motion of outermost electron. The second is duration in which the outermost electron of cesium-133 atom makes 9.2x10^9 vibrations. There is a primary standard for the unit of time THE CESIUM ATOMIC FREQUENCY STANDARD also called as atomic clock for this purpose in U.S.A.

Answer 2

here's ur answer .................................the SI unit of time is second...