JEE Main & Advanced Physics Magnetism Question Bank Magnetic Equipments

  • question_answer A short magnetic needle is pivoted in a uniform magnetic field of strength 1 T. When another magnetic field of strength \[\sqrt{3}\,T\] is applied to the needle in a perpendicular direction, the needle deflects through an angle q, where q is [KCET 1999]

    A)            30o

    B)            45o

    C)            90o

    D)            60o

    Correct Answer: D

    Solution :

               In balance condition \[{{B}_{2}}={{B}_{1}}\tan \theta \] \[\Rightarrow \tan \theta =\frac{\sqrt{3}}{1}\] \[\Rightarrow \theta ={{60}^{o}}\]


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