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Q1) two particles of charges +q and-q are projected from the same point with a velocity v in a region of uniform magnetic field B such that the velocity vector makes an angle ‘ theta ’ with the magnetic field. Their masses are m and 2m then they will meet again for the first time at a point whose distance from the point of projection is : Q2) a particle of specific charge q/m is projected from the origin of coordinates with initial velocity u towards +x and v towards –y Uniform electric and magnetic fields exist in the region along +y of magnitude E & B The particle will definitely return to the origin if a) vB/2piE is an integer b) vB/piE is an integer c) ( u^2 + v^ 2)^.5B/piE is an integer d) uB/2piE is an integer


 


 


 


 


Q1) two particles of charges +q and-q are


projected from the same point with a velocity v


in a region of uniform magnetic field B such


that the velocity vector makes an angle ‘theta


with the magnetic field. Their masses are m


and 2m then they will meet again for the first


time at a point whose distance from the point


of projection is :


 


 


 


 


 


 


 


Q2) a particle of specific charge q/m is  


 


projected from the origin of coordinates with


 


initial velocity u towards +x and v towards –y


 


 


 


Uniform electric and magnetic fields exist in


 


the region along +y of magnitude E & B


 


 


 


The particle will definitely return to the origin if


 


 


 


 


 


 


 


a)            vB/2piE is an integer


 


 


 


   b) vB/piE is an integer


 


 


 


   c) (u^2 + v^2)^.5B/piE is an integer


 


 


 


   d) uB/2piE is an integer


Grade:upto college level

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