An object is in front of a converging lens (f = 0.21 m). The magnification of the lens is m = 4.8.
(a) Relative to the lens, in what direction should the object be moved so that the magnification changes to m = -4.8? Give the number of the correct answer:
1 - toward the lens;
2 - away from the lens.
(b) Through what distance should the object be moved?