Rankers Physics

Reflection by Plane Mirror: Practice Problem & Solution

A tall man of height 6 feet, want to see his full image. Then required minimum length of the mirror will be: (2000)
12 feet
3 feet
6 feet
Any length

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Reflection by Plane Mirror. Understanding the underlying formula is key to arriving at the correct answer below:

For a person to see their full, complete image in a vertical plane mirror, the minimum length of the mirror required is exactly half of the person's height, regardless of their distance from the mirror. Therefore, minimum length = $6 / 2 = 3 feet$ .

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