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A particle of charge+q eneters a region ...

A particle of charge+q eneters a region of uniform magnetic field B (directed into the plane of paper) as shown in the figure. Particle is deflected by a distance d along y-axis after travelling a distance of a along x axis. Find magnitude of linear momentum of particle in Newton-sec. (Given: a=3m, d=4m, Bq=0.32c-Tesla)

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