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Show that the minimum size of a plane mi...

Show that the minimum size of a plane mirror required to see the full image of an observer is half the size of that observer.

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To show that the minimum size of a plane mirror required to see the full image of an observer is half the size of that observer, we can follow these steps: ### Step 1: Understand the Setup Consider a plane mirror placed vertically. An observer stands in front of the mirror. Let the height of the observer be \( L \). ### Step 2: Identify Key Points The observer's eyes are at the top of their height, and their feet are at the bottom. For the observer to see their full image, they need to see both their eyes and their feet in the mirror. ...
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