PhysicsMedium46×since 2002Q6920Three charges + Q, q, + Q are placed respectively, at distance, 0, d/2 and d from the origin, on the x-axis. If the net force experienced by + Q, placed at x = 0, is zero, then value of q is :A−-− Q4{Q \over 4}4QB+ Q2{Q \over 2}2QC+ Q4{Q \over 4}4QD−-− Q2{Q \over 2}2QCheck answerSkip