I've solve part A of this problem but I'm not exactly sure how to approach part B. Any guidance would be appreciated.
A person whose eyes are 1.60 m above the floor stands in front of a plane mirror. The top of her head is 0.15 m above her eyes.
(a) What is the height of the shortest mirror in which she can see her entire image?
Answer is .875 meters
(b) How far above the floor should the bottom edge of the mirror be placed?
2007-03-04 05:33:58 · 1 answers · asked by larkinfan11 3 in Science & Mathematics ➔ Physics
I checked, and the first part is correct. Break it down a little more. You know that, since the distance from her eyes to the top of her head is 0.15m, that the top of the mirror is to sit half way between her eyes and her head.
The light from her eyes is going to bounce off the mirror at the same angle it goes into the mirror, no matter what she is looking at.
So, the bottom of the mirror should be half the distance from her eyes to the ground. The answer is 0.8m.
2007-03-04 15:36:02 · answer #1 · answered by lango77 3 · 0⤊ 0⤋