4. Describe the distinction between a real image and a virtual image. For each of the following, describe what kind(s) of image(s) can be formed (real or virtual, right-side-up or

upside-down, larger or smaller than the object), how each is formed and, quantitatively,how does one find the location of the images. Also, draw an appropriate ray diagram (or diagrams) to show how to find the image for each, given the focal length and an object of a particular size and distance. If there is more than one case (such as both real and virtual images), make a diagram for each case: (a) Plane mirror (b) Concave spherical mirror (c) Convex spherical mirror (d) Positive lens (e) Negative lens.