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12th Class Physics Magnetism Question Bank Case Based (MCQs) - Magnetism and Matter

  • question_answer
    What else can be used instead of mercury in Roget's spiral?

    A) Any liquid

    B) Water

    C) Kerosene oil

    D) Only mercury, nothing else

    Correct Answer: D

    Solution :

    Option [d] is correct. Explanation: Only mercury can be used in Roget's spiral since mercury is a liquid metal through which an electrical circuit, may be completed.


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