For which of the following instruments is the final image erect?

Step-by-step solution

In a Galilean telescope, the objective is a convex lens and the eyepiece is a concave lens. The concave eyepiece intercepts the converging rays from the objective before they form a real image, resulting in a final image that is virtual and erect with respect to the original object. In an astronomical telescope, both the objective and eyepiece are convex lenses. The final image formed is virtual and inverted with respect to the original object. In a compound microscope, both lenses are convex, and the final image i