An electron gun `G` emits electons of energy `2 keV` travelling in the positive x-direction. The electons are required to hit the spot `S` where `GS=0.1 m`, and the line `GS` makes an angle of `60^@` with the x-axis as shown in figure. A uniform magnetic field `B` parallel to `GS` exists in the region outside the electron gun.

find the minimum value of `B` needed to make the electrons hit `S`.

An electron gun G emits electron of energy 2kev traveling in the positive x -direction.The electrons are required to hit the spot S where GS=0.1 m and the line GS makes an angle of 60^(@) with the x -axis, as shown in the fig.A uniform magnetic field vecB parallel to GS exists in the region outside of electron gun.Find the minimum value of B needed to make the electron hit S .[Take mass of electron =9xx10^(-31)kg ]

An electron gun G emits electrons of energy 2ke V travelling in the positive x- direction . The electrons are required to hit the spot S where GS = 0.1m , and the line GS makes an angle of 60^(@) with the x-axis as shown in the fig. A uniform magnetic field vec(B) parallel to GS exists in the region outside the electron gun. Find the GS exists in the region outside the electron gun. Find the minimum value of B needle to make the electron hit S .

One electron gun is firing electrons with a speed V as shown in the figure. There is a target P which is to be hit. Electrons emerge from point 0 and line OP makes an angle with the direction of velocity of electrons. The length of OP is L.A uniform magnetic field B is applied parallel to line OP. Charge on the electron ise and the mass of electrons is m. What minimum magnetic field is needed so that electrons may hit the target P?

In vacuum an electron of energy 10 keV hits tungsten target, then emitted radiation will be

An electron with kinetic energy 2.5 keV moving along the positive direction of an x axis enters a region in which a uniform electric field of magnitude 10 kV // m is in the negative direction of the y-axis. A uniform magnetic field vecB is to be set up to keep the electron moving along the x-axis , and the direction vecB of is to be chosen to minimize the required magnitude of vecB . In unit-vector notation, what vecB should be set up?

An electron with energy 1 keV is entering a uni form magnetic field of 0.04T at an angle 60 with the field. Predict the path of the electron and find the characteristics of the path.

An electron enters a region that contains a magnetic field directed into the page as shown. The velocity vector of the electron makes an angle of 30^(@) with the +y axis. What is the direction of the magnetic force on the electron when it enters the field ?