A charged particle having charge 10 –6 C and mass of 10 –10 kg is fired from the middle of the plate making an angle 30º with plane of the plate. Length of the plate is 0.17 m and it is separated by 0.1m. Electric field E = 10 –3 N/C is present between the plates. Just outside the plates magnetic field is present. Find the velocity of projection of charged particle and magnitude of the magnetic field perpendicular to the plane of the figure, if it has to graze the plate at C and A parallel to the surface of the plate. (Neglect gravity)
Text Solution
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(3.46)
Sol. To graze at 
Using equation of trajectory of parabola,
Hre, 
Substituting in Eq. (i), we have
Solving this equation, we have 
In magnetic field, 
or 
or 
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