Minimum number of two coplanar vectors of equal magnitude whose vectors sum could be zero, is:

Options

A. 2
B. 3
C. 4
D. 6

Explanation

To solve the question, we need to determine the minimum number of two coplanar vectors of equal magnitude whose vector sum could be zero.

### Step-by-Step Solution:

1. **Understanding Vector Addition**:
- For two vectors to sum to zero, they must be equal in magnitude but opposite in direction.

2. **Considering Two Vectors**:
- Let's denote the two vectors as **A** and **B**. If both vectors have the same magnitude but are in opposite directions, we can express this mathematically as:
- **A = +V** (in one direction)
- **B = -V** (in the opposite direction)

3. **Calculating the Sum**:
- The vector sum of **A** and **B** can be calculated as:
- **A + B = V + (-V) = 0**
- This shows that the sum of these two vectors is indeed zero.

4. **Conclusion**:
- Since we can achieve a zero vector sum with just two vectors of equal magnitude and opposite direction, the minimum number of vectors required is **2**.

### Final Answer:
The minimum number of two coplanar vectors of equal magnitude whose vector sum could be zero is **2**.