Imagine a mirror is covered with a plano-concave glass, as shown in the figure below. The mirror and the curved surface of the glass both have the same radius of curvature. Consider a sphere, that is modeled like a point object, is placed outside the glass. Determine what the image distance formed by the mirror will be when measured from the mirror's surface.
![](https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/3762dc59-2ead-4974-9ffb-19c22372016e)