# What is the minimum size of the mirror required so that a person can see his/her full reflection?

+1 vote
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What is the minimum size of the mirror required so that a person can see his/her full reflection? Please share the working?

posted Jul 16, 2016

In order to view his image, the man must look as low as point Y (to see his feet) and as high as point X (to see the tip of his head). The man only needs the portion of mirror extending between points X and Y in order to view his entire image. All other portions of the mirror are useless to the task of this man viewing his own image.

The diagram depicts some important information about plane mirrors. Using a cm-ruler, measure the height of the man (the vertical arrow) on the computer screen and measure the distance between points X and Y. What do you notice? The man is twice as tall as the distance between points X and Y. In other words, to view an image of yourself in a plane mirror, you will need an amount of mirror equal to one-half of your height. A 6-foot tall man needs 3-feet of mirror (positioned properly) in order to view his entire image.

+1 vote

You need to have at least half the size of the person's height if wants to see himself standing.

Rhe question is nit complete because the distance from the mirror drcides the other factors irrespective of the height of the objet

The mirror should have minimum size of your size.......

Since the size of the image equals the size of the object, then if the mirror is half your height you will just manage to see half your body height, though some one else can see whole of you in your image.

So irrespective of the distance, you can't see the whole of yourself in the mirror if the mirror has smaller size than yours......

It depends on where you stand, basically distance between you and your mirror. based on this factor it will decide the size of the mirror.

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