When a particle moves in a circle of radius r, the displacement covered in one complete revolution is _____

Explanation

To solve the question, we need to understand the concept of displacement in circular motion.

### Step-by-Step Solution:

1. **Understanding Displacement**: Displacement is defined as the shortest distance from the initial position to the final position of an object. It is a vector quantity and has both magnitude and direction.

2. **Analyzing Circular Motion**: When a particle moves in a circle, it starts at a certain point and returns to the same point after completing one full revolution.

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