Two large , parallel conducting plates X and Y , kept close to each other , are given Q1 and Q2(Q1>Q2). The four surfaces of the plates are A,B,C and D , as shown (i) The charge on A is 1/2(Q1+Q2) (ii) The charge on B is 1/2(Q1−Q2) (iii) The charge on C is 1/2(Q2−Q1) (iv) The charge on D is 1/2(Q1+Q2)