Mirror question?

2 ⤊

A man 190 cm tall stands 2.5 m from a plane mirror. His dog, 30 cm tall, sits 1 m in front of him. What minimum mirror size is needed for the man to see all of his dog's reflection?

I got:
h=H * (i)/(i+o)
=.3m x (2.5m / 4.0 m)
h=.1875 m

But this does not take into account the man's height. Please help.

2007-07-31 15:43:48 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Physics

1 answers

The size of the mirror (part of the mirror reflecting the dog) doesn't depend on the man's height.

Your result is correct.
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2007-07-31 19:12:45 · answer #1 · answered by oregfiu 7 · 2⤊ 0⤋