If a man wishes to use a plane mirror on a wall to view both his head and his feet as he stands in front of the mirror,the required length of the mirror:
A) depends on both the height of the man and the distance from the man to the mirror.
B) is equal to the height of the man.
C) is equal to one-half the height of the man.
D) depends on the distance the man stands from the mirror.

Question

Quizplus · Accepted Answer

The required length of the mirror is equal to one-half the height of the man since the mirror shows a reflection of the man's full height, which is the distance from his head to his feet, and the mirror image is the same size as the actual object, so the mirror's length would be equal to half of the man's height.

If a Man Wishes to Use a Plane Mirror on a Wall