Answer
$628318.5 rad/s$
Work Step by Step
As we know that angular $\omega$ and time period $T$ are mutually related as follows
$\omega=\frac{2\pi}{T}$
Putting the values,we get
$\omega=\frac{2\times3.1415}{1\times10^{-5}}$
$\omega= 628318.5 rad/s$
