An electron is projected as in figure with kinetic energy K, at an angle `theta=45^(@)` between two charged plates. The magnitude of the electric field so that the electron just fails to strike the upper plate, should be greater than:

An electron is projected as shown in fig. with kinetic energy K, at an angle theta=45^(@) between two charged plates. Ignore the gravity. At what distance from the starting point will the electron strike the lower plate?

An electron of kinetic energy K is projected between two charged plats at an angle 60^(@) as shown in figure. If electrons doesn't reach to the upper plate just before striking then the magnitude of electric field will be more than:

An electron enters the region between the plates of a parallel plate capacitor at an angle theta to the plates. The plate width is l , the plate separation is d . The electron follows the path shown just missing the upper plate. Neglect gravity. Then,

An electron is projected with an initial velocity of 10^(7)ms^(-1) into an electric field between two parallel plates 1 cm apart. The electron enters the field at a point midway between the plates. If the electron just misses the positivity charged plate as it emerges from the field, find the magnnitude of the electric density between the plates. (Length of each plate is 2 cm, mass of electron= 9xx10^(-31) kg and charge of electron =1.6xx10^(-19) C)

An electron is projected as in fig. at a speed of 6 x 10^(6)ms^(-1) at an angle of 45^(@) E=2000Vm^(-1) directed upward d=3cm and 1=10cm. Will the electron strike either of the plates?

A uniform electric field exists in a region between two oppositely charged plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate, 3.0 cm away, in a time 1.5 xx 10^(-8) s . Just as the electron strikes the second plate, what are the its (a) momentum magnitude and (b) kinetic energy ? (c ) What is the magnitude of the electric field vec(E) ?

An electron having charge e and mass m starts from the lower plate of two metallic plates separated by a distance d . If the potential difference between the plates is V , the time taken by the electron to reach the upper plate is given by .

A uniform electric field E is established between two parallel charged plates as shown in figure. An electron enter the field symmetrically between the plates with a speed u. The length of each plate is l. if the electron does not stricke any of the plates, find the angle of deviation of the electron as it comes out of the field at the outer end of plates. [tan^(-1) ((eEl)/(mu^(2)))]