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Standard XII
Physics
Question

Consider a region where both uniform electric and magnetic fields E and B are present both along the z-axis. A positively charged particle of charge and mass is released from the origin with an initial velocity Ve^i. Which of the following option(s) are correct?


  1. (A)The y coordinate of the particle at time t=πMqB is−2mvqB
  2. (B)The distance between two consecutive point on the z-axis where the particle touches the Z-axis is an odd multiple of a constant distance.
  3. (C)The distance between two consecutive point on the z-axis where the particle touches the Z-axis is an even multiple of a constant distance.
  4. (D)The time after which the particle touches the z-axis is 2πmqB

A
(D)The time after which the particle touches the z-axis is 2πmqB
B
(A)The y coordinate of the particle at time t=πMqB is−2mvqB
C
(B)The distance between two consecutive point on the z-axis where the particle touches the Z-axis is an odd multiple of a constant distance.
D
(C)The distance between two consecutive point on the z-axis where the particle touches the Z-axis is an even multiple of a constant distance.
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