Electrostatics

Figure shows three arrangements of electric field lines. In each arrangement, a proton is released from rest at point \(\mathrm{P}\) and then accelerated through point \(\mathrm{Q}\) by the electric field. Points \(\mathrm{P}\) and \(\mathrm{Q}\) have equal separations in the three arrangements. If \(p_1 p_2\) and \(p_3\) are linear momentum of the proton at point \(\mathrm{Q}\) in the three arrangement respectively, then