An electron is projected with an initial speed v0=1.60×106 ms−1 into the uniform field between the parallel plates as shown in figure. Assume that the field between the plates is uniform and directed vertically downward, and that the field outside the plates is zero. The electron enters the field at a point midway between the plates. Mass of electron is 9.1×10−31 kg. If instead of an electron, a proton were projected with the same speed, then compare the paths travelled by the electron and the proton.
(1) The proton will hit the upper plate.
(2) The proton will hit the lower plate.
(3) The proton will not hit either plate.
(4) None of these.