Two particles with positive charge Q and 2Q are evently spac

Two particles with positive charge +Q and +2Q are evently spaced about the origin on the y axis. About what plane(s) is the system symmetric? Select one of the Following: (a) The system is not symmetric about any plane. (b) The system is symmetric about the x - z plane. (c) The system is symmetric about the y - z plane. (d) The system is symmetric about the x - z plane and the y - 2 plane.

Solution

these charges applied equal amount of force on each other

so option b is correct