Two nonconducting infinite planes sheets having charges Q and 2 Q are placed parallel to each other as shown in figure. The charge distribution on the four faces of the two plates is also shown. The electric field intensities at three points 1, 2, and 3 are E→1,E→2,andE→3, respectively. Then the magnitudes of E→1,E 2, and E 3 are, respectively (surface area of plates ) :