Question

A particle is moving in a circular path of radius r, the displacement after covering half a circle would be

• A. $Zero$
• B. $\pi r$
• C. $2r$
• D. $2\pi r$

Answer 1

The correct option is (D) $2r$

We know,

Displacement is the shortest path between the initial position and final position.

According to the question, the particle is covering half of the circle

If the particle starts from A, after covering half the circle, it will be at B.

So, displacement = 2r

Hence the displacement of the particle is 2r.