An electron is projected with an initial speed v0=1.60×106ms−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 9.1×10−31kg. For the condition that electron just misses the upper plate, the magnitude of electric field is :
An electron is projected with an initial speed v0=1.60×106ms−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 9.1×10−31kg. For the condition that electron just misses the upper plate, the magnitude of electric field is :











