In a darkened room, a burning candle is placed 1.50 m from a white wall. A lens is placed between candle and wall at a location that causes a larger, inverted image to form on the wall. When the lens is moved 90.0 cm toward the wall, another image of the candle is formed. Find
(a) The two object distances that produce the images just described and
(b) The focal length of the lens.
(c) Characterize the second image.