[问答题]
Spherical aberration in a thin lenr8 j:lu: iqbr0nlyhfhp9*d ,7 s is minimized if rays are bent equ7gdzmj xh7o0ekf )- w8ally by the two surfaces. If a planoconvex lens is used to form a real image of an object at infinity, which surface shoul- 7 fwmod8jx)g0 h7ezkd face the object? Use ray diagrams to show why.