JEE Main & Advanced Physics Magnetism JEE PYQ-Magnetism

  • question_answer
    Relative permittivity and permeability of a material are \[{{\varepsilon }_{r}}\] and \[{{\mu }_{r}}\], respectively. Which of the following values of these quantifies are allowed for a diamagnetic material? [AIEEE 2008]

    A)             \[{{\varepsilon }_{r}}=0.5,\,{{\mu }_{r}}=0.5\]

    B)             \[{{\varepsilon }_{r}}=1.5,\,{{\mu }_{r}}=1.5\]

    C)             \[{{\varepsilon }_{r}}=0.5,\,{{\mu }_{r}}=1.5\]

    D)             \[{{\varepsilon }_{r}}=1.5,\,{{\mu }_{r}}=0.5\]

    Correct Answer: D

    Solution :

    [d] For diamagnetic material, \[0<{{\mu }_{r}}<1\] and for any material \[{{\varepsilon }_{r}}>1\]


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