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28. A charge q, mass m, travelling with speed v enters a region of magnetic field at an angle α with magnetic field. Mark the following statements as true or false.(a) Kinetic energy of particle remains constant irrespective of α(b) Velocity of particle remains constant if α = nπ, where n is an integer(c) Speed of particle remains constantTT(d) Acceleration of particle remains constant if α= (2n-1)π\2T(e) Average velocity of particle becomes negligible if α = (2n-1)π\2 over a long time |
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