an object, a lens, and a mirror are arranged so that the object is to the left of and 50 cm from a converging lens. the magnitude of the focal length of the first lens is 30 cm. a concave mirror is 25 cm to the right of the first lens and the magnitude of the radius is 20 cm. find the location of the final image relative to the original object, the overall magnification, and the character of the final image.