Question

The SI unit of angular velocity is

• A. $m{s}^{-1}$
• B. $rad{s}^{-1}$
• C. $rad{s}^{-2}$
• D. $m{s}^{-2}$

Answer 1

The correct option is B

$rad{s}^{-1}$

1. Angular velocity is defined as angular displacement per unit of time.
   $Angularvelocity=\frac{angulardisplacement}{timetaken}$
2. SI unit of angular displacement is radians (rad).
3. SI unit of time is seconds (s).
4. SI unit of angular velocity is $rad{s}^{-1}$.

Therefore, the correct option is (b).