Plane mirror Assume the units on the picture below are in meters. A source of light is located at x=-6 m,y=+6 m. The light shines onto the midpoint of the top of a horizontal plane mirror, as shown below. The picture shows the path taken by the incident beam and the reflected beam. y source 7 6 5 -4 3 2 -Imirror! 2 3 4 5 6 7 .\" Openin} 10 points, marked with red dots, are shown on the picture. Your goal is to move the mirror vertically so that the reflected beam passes through one of the red dots. The mirror is not rotated, and it is not moved horizontally - it is only moved straight up or down. Also, when the mirroris moved the light source is adjusted so that the beam always strikes the midpoint of the upper surface of the mirror. That midpoint is shown atx=0m,y=0min the picture above. @ Part (a) o Homework Unanswered Due Today, 12:15 PM For the reflected beam to pass through the point at x=+1 m, y = +4 m, where should the midpoint of the upper surface be located? x=0m,y= m Type your numeric answer and submit Unanswered o 5 attempts left