Question 1

  A sign painted on a store window is reversed when viewed from inside the store. If a person inside the store views the reversed sign in a plane mirror, does the sign appear as it would when viewed from outside the store? (Try it by writing some letters on a transparent sheet of paper and then holding the back side of the paper up to a mirror.) Explain.

SOLUTION: Since mirrors appear to reverse left and right, and since looking from behind the sign reverses left and right, the mirror will re-reverse the sign so you can see it just as people from outside see it.