How tall must a plane mirror be in order for you to be able to see your full image in it?
A) the same height as you
B) 1/4 of your height
C) half of your height
D) 3/4 of your height
E) twice your height

Question

Quizplus · Accepted Answer

For you to see your full image in a plane mirror, the mirror height should be half of your height. This is because when you stand in front of the mirror, the top of your head will be reflected at the same height above the mirror as it is below, and the same will be true for the bottom of your feet. Therefore, the mirror must be tall enough to reflect your entire body.

How Tall Must a Plane Mirror Be in Order for You