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)is equal to the height of the man.
B)is equal to one half the height of the man.
C)depends on the distance the man stands from the mirror.
D)depends on both the height of the man and the distance from the man to the mirror.

Question

Quizplus · Accepted Answer

The required length of the mirror is equal to one half the height of the man. This is because the angle of incidence equals the angle of reflection, allowing a person to see their entire height in a mirror that is only half their height, regardless of the distance from the mirror.

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