1. Place the basic optics light source flat on the lab table and rotate the knob on the front of the light source to produce a single ray of light as in Figure 2. 2. Place the basic optics ray table on the lab bench just in front of the light source. such that the light ray passes through the center of the ray table. 3. Rotate the top of the ray optics table so that light ray is aligned with the D\" mark on the tabletop. 4. Place the [Tl-shaped acrylic lens in the center of the table {frosted side down). and adjust its position so it ts within the lens outline on the tabletop. Important Note With the equipment set up you should see the light ray passing through the lens. If you adjust the angle at which the light is incident on the flat front of the D-shaped lens you will see the light ray change direction due to refraction within the glass. You may also notice that the direction of the light ray does not change when it leaves the glass. even though :11 at it}. Explain why this happens\"! Figure 2: Setup