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JEE Main & Advanced JEE Main Paper (Held On 26 May 2012)

  • question_answer
    This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement 1: A charged particle is moving at right angle to a static magnetic field. During the motion the kinetic energy of the charge remains unchanged. Statement 2: Static magnetic field exert force on a moving charge in the direction perpendicular to the magnetic field.   JEE Main Online Paper (Held On 26-May-2012)  

    A) Statement 1 is false, Statement 2 is time.

    B) Statement 1 is time, Statement 2 is time, Statement 2 is not the correct explanation of Statement 1.

    C) Statement 1 is true. Statement 2 is false.

    D) Statement 1 is time, Statement 2 is time, Statement 2 is the correct explanation of Statement 1.

    Correct Answer: D

    Solution :

    When a charged particle enters the magnetic field in perpendicular direction then it experience a force in perpendicular direction. i.e. \[F=Bqv\sin \theta \] Due to which it moves in a circular path.


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