A particle of charge per unit mass \alpha is released from origin with a velocity ¯V=V_o^i in a uniform magnetic field ¯B=B_0^k. If the particle passes through (0,y,0) then y is equal to
A
−2v_oBoα
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B
v_oBoα
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C
2v_oBoα
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D
−v_oBoα
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Solution
The correct option is A−2v_oBoα R=mv0qBly=2R=2mv0qB0=2voαB0∴y=−2voαBoHence,optionAiscorrectanswer.