Question
Four identical thin, square metal sheets, S_1, S_2, S_3 and S_4, each of side a are kept parallel to each other with equal distance d( a) between them, as shown in the figure. Let C_0= _0 a^2 / d, where _0 is the permittivity of free space. Match the quantities mentioned in List-I with their values in List-II and choose the correct option.