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JEE Main201911 Jan 2019Evening ShiftPhysicsMagnetic Effects of CurrentActual

The region between y=0 and y= d contains a magnetic field B = B z . A particle of mass m and charge q enters the region with a velocity v =v i . if d = m v 2 qB , the acceleration of the charged particle at the point of its emergence at the other side is :

Options

  1. Aq v ~B ~m ( 1 2 i - 3 2 j )
  2. Bq v ~B ~m ( 3 2 i + 1 2 j )
  3. Cq v ~B ~m ( - j + i 2 )
  4. DNone of the above

Correct answer

D. None of the above

Step-by-step solution

Assuming particle enters from (0, ~d )r= m v q B , d= r 2 a= q V B m [ - 3 i-j 2 ] this option is not given in the all above four choices.

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