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NEET Physics Magnetism NEET PYQ-Magnetism

  • question_answer
    A bar magnet of magnetic moment \[\vec{M}\] is placed in a magnetic field of induction \[\vec{B}\]. The torque exerted on it is:                                                                                                                                      [AIPMT 1999]

    A)  \[\vec{M}\,\vec{B}\]                 

    B) \[-\vec{M}\,\vec{B}\]     

    C)  \[\vec{M}\times \,\vec{B}\]

    D)       \[-\vec{M}\times \,\vec{B}\]

    Correct Answer: C

    Solution :

    [c] When a bar magnet is placed in an external magnetic field \[\vec{B},\] a magnetic torque \[\vec{\tau }\] acts on it, which is given by


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