An electron gun G emits electrons of energy 2 keV 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 60o
with the x axis as shown in fig. A uniform magnetic field →B
parallel to GS exists in the region outside the electron gun. If the minimum value of B needed to make the electrons hit S is Bmin=4.73×10−XT. find X?