2007-10-09 19:17:39 · 6 answers · asked by ndungupatoh 1 in Science & Mathematics ➔ Physics
the mirror [ plane mirror ] needs to be h /2 units tall, at a minimum , with the top of the mirror aligned with the top of your head...
To barely see your feet, the angle of incidence = angle of reflection to your eye, and the triangles you get, places the bottom of the mirror at 1/2 of your height ....
to construct the ray diagram .... draw a ray from the tip of your feet to the mirror, and reflecting to your eye, with angle incidence = angle reflection ... and a ray from the top of your head to the top of the mirror and back to your eye ... then you will see that you get two = triangles, with the common leg being the line from your body to the bottom of the mirror, which is parallel to the floor ... this line hits your body at 1/2 of your height ....
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Why the thumbs down ? ... it is the correct answer ... must be someone who doesn't know Physics....
2007-10-09 19:33:22 · answer #1 · answered by Mathguy 5 · 0⤊ 1⤋
If a person expects to view his whole body in the mirror,the minimum height has to be h/2.The condition to view the whole body in the mirror is that the height of the mirror has to be more than half of the object
2007-10-09 19:38:08 · answer #2 · answered by Anonymous · 0⤊ 1⤋
Your standard door mirror to check yourself out is anywhere from 4 to 5 feet long & atleast 22inches wide. The mirror may come about 2 feet off the ground cause as you stand back you see it all. it does not have to go to the floor just to view your entire self.
2007-10-09 19:23:36 · answer #3 · answered by Bagmoore 2 · 0⤊ 1⤋
h/2
2007-10-09 20:29:11 · answer #4 · answered by Dil 2 · 0⤊ 1⤋
That kinda depends on how far away from the mirror they're standing.
Doug
2007-10-09 19:21:42 · answer #5 · answered by doug_donaghue 7 · 2⤊ 2⤋
If it is convex, very small................
2007-10-09 21:26:23 · answer #6 · answered by matrix 3 · 0⤊ 0⤋