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 & BThe particle will definitely return to the origin ifa) 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

Shane Macguire , 11 Years ago

Grade upto college level