Fill in the blank in
A person 1 m in front of a plane mirror seems to be ______m away from his image.

Explanation

To solve the question, we need to determine how far a person appears to be from their image when standing in front of a plane mirror.

### Step-by-Step Solution:

1. **Understand the Setup**:
- A person is standing 1 meter in front of a plane mirror.

2. **Identify the Image Formation**:
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