Question Detail
Question
Based on Example 32-2 (pages 15-16), if a woman 1.60 m tall with eyes 10 cm below the top of her head wants to see her whole body in a vertical plane mirror, what is the minimum height the mirror must be?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Page 16, in the solution for Example 32-2, states: 'Geometry then shows that the mirror must be 80 cm high, with its bottom 75 cm off the floor.' 80 cm is 0.80 m.
Hint
The minimum height of a plane mirror needed to see one's full body is half of one's height.