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12th Class Physics Magnetism Question Bank MCQ - Magnetism and Matter

  • question_answer
    The Earth's magnetic field departs from its dipole shape substantially at large distance (greater than about 3000 km). The responsible factor for this distortion is:

    A) motion of ions in Earth's ionosphere.                   

    B)             motion of ions in Earth's atmosphere.                 

    C)             motion of ions in Earth's lithosphere.                   

    D)             motion of ions in the space.                          

    Correct Answer: A

    Solution :

    (a) motion of ions in Earth's ionosphere.                   Due to motion of ions in Earth's ionosphere the Earth's magnetic field gets modified.


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