One second is defined as | Physics | SolveeIt

Question

One second is defined as

$1650763.73$ periods of krypton clock

$652189.6$ periods of krypton clock

$1650763.73$ periods of cesium clock

$9192631770$ periods of cesium clock

Answer

$9192631770$ periods of cesium clock

Explanation

Solution

The second is the duration of $9192631770$ periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium- $133$ atom.

Physics Question on Units and measurement

Solution