A point charge -Q is placed at a small distance r from an isolated conducting plate. The direction of the electric field at a point A on the other side of the plane at the same distances r is:

directed parallel to the plane of plate and in upward direction directed parallel to the plane of plate and in downward direction directed perpendicular to the plane of plate and towards the plate directed perpendicular to the plane of plate and away from the plate

directed perpendicular to the plane of plate and towards the plate

The correct answer is Option (3) → directed perpendicular to the plane of plate and towards the plate