New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The bubbles in a bubble memory pack are created with the

    help of 
    A laser bream Correct Answer Incorrect Answer
    B Magnetic field Correct Answer Incorrect Answer
    C X-ray Correct Answer Incorrect Answer
    D Electric field Correct Answer Incorrect Answer

    Solution

    The correct answer is B

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