22.5 Thin Lenses Virtual Image by a Converging Lens Explanation: The video shows a single convergent lens with the object placed inside the focal point, so a virtual image is formed. As shown, a viewing screen cannot be used to project a virtual image. The object used in this simulation is the letter T. The lens is represented by a blue circle with dots placed on either side to designate the focal point. The moving gray square simulates a viewing screen. As discussed in Section 22.5, a virtual inverted image is formed on the same side of the lens. You can determine the position of this image either by using a ray diagram as shown in Section 22.6 or by using Equation 22.5.   Source: Samantha Shoemake and John T. Foley The Optics Project (TOP) Department of Physics and Astronomy Mississippi State University, Mississippi State, Mississippi 39762.