# Which of the following is not a unit of angular displacement?

B) Degrees
C) Metres
D) Revolutions

The correct option is C) Metres.

Radians, degrees, and revolutions are the units of angular displacement.

Angular displacement is defined as the angle through which an object moves on a circular path. It is the angle between the initial and final positions measured in radians.

Following are the ways to express angular displacement:

 $\theta =\frac{s}{r}$

Where,

• θ is the angular displacement
• s is the distance travelled
• r is the radius of the circle
 (θf – θi) = angular displacement