If your height is h and you want to see your complete image in a plane mirror, what should be the minimum size of the mirror ?
Strategy : You can see your complete image if light rays from the top of your head and light rays from your feet reach your eyes after reflection.

Explanation

To determine the minimum size of a plane mirror required for a person of height \( h \) to see their complete image, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Reflection**:
- A plane mirror reflects light such that the angle of incidence equals the angle of reflection. This means that the rays coming from the top of the head and the feet of the person must reach the eyes after reflecting off the mirror.

2. **Drawing the Diagram**:
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