Using mirror formula, explain why does a convex mirror always produce a virtual image.

Explanation

To explain why a convex mirror always produces a virtual image using the mirror formula, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Mirror Formula**:
The mirror formula is given by:
\[
\frac{1}{f} = \frac{1}{v} + \frac{1}{u}
...