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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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