CBSE-XI-Physics

47: The Special Theory of Relativity

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  • #7
    A charged particle is projected at a very high speed perpendicular to a uniform magnetic field. The particle will
    (a) move along a circle
    (b) move along a curve with increasing radius of curvature
    (c) move along a curve with decreasing radius of curvature
    (d) move along a straight line
    digAnsr:   a
    Ans : (a) move along a circle.
    If a charged particle is projected at a very high speed perpendicular to a uniform magnetic field, its mass will increase from mo to`` m=\frac{{m}_{o}}{\sqrt{1-{\displaystyle \frac{{v}^{2}}{{c}^{2}}}}}`` and its radius will increase from
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