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(a) clockwise
                (b) anticlockwise
                (c) changing
                (d) nothing can be said
            10.   The north pole of a bar magnet is rapidly introduced into a solenoid at one end (say A). Which of
                the following statements correctly depicts the phenomenon taking place?
                (a) No induced emf is developed.
                (b) The end A of the solenoid behaves like a south pole.
                (c) The end A of the solenoid behaves like north pole.
                (d) The end A of the solenoid acquires positive potential.
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