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[" A particle having specific charge "sigma" is projected in xy plane with a s.36"V/m" .There exists a uniform magnetic field inz-direction "],[" having a fixed magnitude "B_(0)" .The field "2n" is madeto reverse its direction after every intervalof "(2 sigma)/(sigma B)" .The maximum seprention "],[" between two positions of the particle during its course of motion will be "],[[" (1) "(2sqrt(2)v)/(sigma B_(0))," (2) "(4v)/(sigma B_(0))," (3) "(2v)/(sigma B_(0))," (4) "(v)/(sigma B_(0))]]

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