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    Question

    Which of the following materials is used for the

    generation of ultrasonic waves by using magnetostriction effect?
    A Paramagnetic material Correct Answer Incorrect Answer
    B Ferromagnetic material Correct Answer Incorrect Answer
    C Diamagnetic materials Correct Answer Incorrect Answer
    D Both paramagnetic and diamagnetic material 4 Correct Answer Incorrect Answer

    Solution

    The correct answer is B

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