A butterfly at eye level is 20 cm in front of a plane mirror. You are behind the butterfly, 50 cm from the mirror. What is the distance between your eye and the image of the butterfly in the mirror? Explain your reasoning. We also have to make a sketch. I have no idea how to do this.

Answer 1

The image of the butterfly is 20 cm behind the mirror. Your eye is 50 cm in front of the mirror. The total distance between them is 70 cm.

You------B--|--B
<-----50--->|20>