Can an object be virtual ?

Explanation

### Step-by-Step Solution

1. **Understanding the Concept of Objects**:
- Objects in optics can be classified into two types: real and virtual.
- A real object is one that can be seen directly and has a physical presence.
- A virtual object, on the other hand, does not have a physical presence but appears to exist due to the way light is refracted or reflected.

2. **Definition of Virtual Objects**:
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