The inhabitants of a planet in another galaxy have their eyes at the exact center of their 4.0-m long bodies. How long must a plane mirror be for such a creature to be able to see all of its body in the mirror?
A) 1.0 m
B) 2.0 m
C) 2.5 m
D) 4.0 m
E) 8.0 m

Question

Quizplus · Accepted Answer

To see the entire body in a mirror, the mirror only needs to be half the height of the body because the eyes are at the center. Thus, for a 4.0-m long body, a 2.0-m mirror is sufficient.

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